# Paleofauna of the Eocene Okanagan Highlands

The paleofauna of the Eocene Okanagan Highlands consists of Early Eocene arthropods, vertebrates, plus rare nematodes and molluscs found in geological formations of the northwestern North American Eocene Okanagan Highlands. The highlands lake bed series' as a whole are considered one of the great Canadian Lagerstätten. The paleofauna represents that of a late Ypresian upland temperate ecosystem immediately after the Paleocene-Eocene thermal maximum, and before the increased cooling of the middle and late Eocene to Oligocene. The fossiliferous deposits of the region were noted as early as 1873, with small amounts of systematic work happening in the 1880-90s on British Columbian sites, and 1920-30s for Washington sites. Focus and more detailed descriptive work on the Okanagan Highlands site started in the last 1970's. Most of the highlands sites are preserved as compression-impression fossils in "shales", but also includes a rare permineralized biota and an amber biota.

## Extent

The 1,000 km (620 mi) series of lacustrine deposits are located across the Central British Columbia, Canada southeast to northern central Washington state, United States. grouped informally into "Northern", "Central", and "Southern" sites. The Northern sites consist of unnamed Ootsa Group formations which outcrop as the "Driftwood shales" near Smithers, British Columbia, the "Horsefly shales", of an unnamed formation and unnamed group which outcrop around Horsefly, British Columbia, and possibly sites now considered lost in the Quesnel, British Columbia area, The Central sites represent Kamloops Group formations with the McAbee Fossil Beds, Tranquille River site and Falkland site, all in the Tranquille Formation, the Quichena site and Stump Lake site in the Coldwater Beds and outcrops of the Chu Chua Formation near Barriere, British Columbia. The Southern sites include the Princeton Group Allenby Formation sites surrounding Princeton, British Columbia, such as "Nine Mile Creek", "One Mile Creek", "Pleasant Valley", "Thomas Ranch", "Vermilian Bluffs", and "Whipsaw Creek". The Penticton Groups Kettle River, Marama and Marron Formations in the Boundary District along the Canada-United States border are closely correlated with the Klondike Mountain Formation across the border. The most southerly of the Okanagan Highlands lakes, the Klondike Mountain Formation in Northern Ferry County, Washington include the "Boot Hill site", "Corner Lot site", "Gold Mountain site", "Knob Hill site", and "Mount Elizabeth site".
There is debate as to the affiliation of the, potentially lost, Quesnel sites with the Greater Okanagan Highlands. Archibald et al. (2018) in a monograph of the Highlands Hymenoptera families included them as part of the series. However the certainty for the placement was questioned earlier by Eberle et al. (2017) and Archibald and Cannings (2022) who opted to tentatively exclude Quesnel from the highlands while discussing the history of field colleting in the region.

## Paleofauna

The Okanagan highlands represent a snapshot of lake, wetlands, and montane forest animal life which existed approximately 15 million years ago after the Cretaceous–Paleogene extinction event. The temperate upland lakes hosted insects, fish, birds, and mammals with the notably well preserved megafossils often retaining insect colour patterns, gnat wing membrane hairs, and whole bird feathers. In some cases the fine detail preservation of soft parts allows for the preservation of internal anatomy.
Archibald and Makarkin (2006) suggested the disjunct distribution of genera between the Danish western Limfjord coasts Fur Formation and the Okanagan highlands may have been enabled by rising crust elevations in the northern Atlantic region and subsequent increase in landmass during the Late Paleocene which linked Northern Europe with Greenland until at least the Early Eocene. Several land bridge routes may have acted as migration corridors for biotic interchange, the northern De Geer land bridge from Fennoscandia to North America via northern Greenland, and the southern Thulean land bridge from northern Britain though the Faroe Islands and then Greenland and North America. Several insect genera share disjunct distributions between the highlands and Limfjord including the mecopteran Cimbrophlebia, the giant lacewing Palaeopsychops, the green lacewing Protochrysa, the bull dog ant Ypresiomyrma.
The Hat Creek Amber deposits in the central region provide evidence for small and microbiotic elements of the Okanagan Highlands forests though entombed organisms such at terrestrial nematodes and microwasps that otherwise would likely not be preserved in the lake environments. The highlands as a whole have been described as one of the "Great Canadian Lagerstätten" based on the diversity, quality and unique nature of the biotas that are preserved. The highlands temperate biome, preserved across a large transect of lakes, recorded many of the earliest appearances of modern genera, while also documenting the last stands of ancient lines. David Grimaldi et al. (2018) during discussion of inclusions in Alaskan Chickaloon amber, noted the Okanagan Highlands record of latitudinal extinctions, specifically the modern southern hemisphere endemic groups Eomeropidae mecopterans and Myrmeciinae bulldog ants.

## Lithology

The majority of the lake deposits are compression fossils in lake bed sediments noted for both the paleofauna and paleofloras, with an additional pair of important non-compression biotas. A permineralized chert flora, the Princeton Chert is found along the Similkameen River interbedded with coal deposits of the Ashnola shale unit, Allenby Formation known for anatomically preserved plants. In the Central sites, subbituminous coal of the Hat Creek Coalfield around Hat Creek hosts an entombment biota, the Hat Creek amber, which preserves highlands faunal elements that are not found in the compression biotas. Initial discussion of the amber presented by George Poinar, Jr. et al. (1999) suggested the Hat Creek amber producing tree was likely to be an araucarian tree in the genus Agathis, based on unreported magnetic resonance spectroscopic analysis and earlier reports of the genus in Mesozoic Canada. A purported occurrence of Araucaria at the McAbee site was used as additional support for the ambers origin. The Agathis origin for Canadian Mesozoic amber was later called into question by Ryan McKellar and Alexander Wolfe (2010) based on a lack of any araucarian macrofossil history in the northern hemisphere the McAbee fossils having been already reidentifed as from the cupressaceous Cunninghamia. Based on Fourier-transform infrared spectroscopic analysis and associated amber inclusion fossils, they suggested the Mesozoic ambers of Canada to be from the extinct cupressaceous genus Parataxodium. The origin of the Hat Creek ambers was further noted as likely from a cupressaceous source by Grimaldi et al. (2018) who call out a primary floral component of the host coal being Metasequoia and that the coeval Puget Group Tiger Mountain amber of Washington state is also of Metasequoia origins. They hypothesize that the major amber producing plant of the Paleocene Pacific Northwest forests as Metasequoia, but note that further investigation of Chickaloon, Hat Creek, Coalmont, and Tiger Mountain ambers would be needed.

## Mollusks

Mollusks are a rare component of the highlands, usually being mentioned only in passing, such as by Mark Wilson (1977, 1978), and with fossils being reported from three sites only. A series of species were described from several Allenby Formation sites around Princeton by Russell (1957), who documented 4 gastropod species, and tentatively identified to genus another gastropod and a bivalve. Additional unidentified small bivalve fossils were mentioned from the Pleasant Valley site by Wilson (1977) and the Quilchena site by Wilson (1987), while unidentified gastropods were briefly mentioned by Kathleen Pigg et al. (2018).
| Family | Genus | species | Sites | Notes | Images |
| Hydrobiidae | †Micropyrgus | †Micropyrgus camselli | Princeton | A hydrobiid mud snail | |
| Lymnaeidae | Stagnicola | †Stagnicola tulameenensis | Princeton | A lymnaeine pond snail | |
| Physidae | Aplexa | †Aplexa ricei | Princeton | An aplexine bladder snail | |
| Physidae | Physa | †Physa saxarubrensis | Princeton | A physine bladder snail | |
| Planorbidae | Ferrissia | †Ferrissia arionoides | Princeton | An ancylinine ramshorn snail | |
| Planorbidae | Gyraulus? | Indeterminate | Princeton | A possible planorbinine ramshorn snail Not described to species | |
| Sphaeriidae | Sphaerium? | Indeterminate | Princeton | A possible sphaeriine fingernail clam Not described to species | |
| Unidentified | Unidentified | Unidentified | Quilchena Princeton | Unidentified freshwater bivalves. | |
| Unidentified | Unidentified | Unidentified | Republic | Unidentified freshwater gastropods. | Undescribed gastropod |

## Nematodes

In the initial description of Hat Creek Amber, Poinar et al. make note of nematode specimens found in the deposit, with a brief commentary regarding them as the oldest terrestrial free-living nematode fossils to have been found up to that point, but did not give any specific taxonomic identification beyond that.
| Family | Genus | species | Sites | Notes | Images |
| Unidentified | Unidentified | Unidentified | Hat Creek | Unidentified terrestrial specimens in amber | |

## Arachnids

A single arachnid has been described fully from the Okanagan highlands, the Nursery web spider Palaeoperenethis thaleri, known from an adult male. This spider was likely aquatic as are the other members of the family, and based on morphological similarities, it was possibly closer in relation to African and Asian species in the Perenethis genus group then to the only modern genus in British Columbia Dolomedes. Another spider specimen, University of Alberta 5007 was noted by Wilson (1977) from the Kamloops area, while various spiders have been attributed to the McAbee fossil beds. Undescribed male and female orb-web spiders were figured by Wehr (1998) from the Princeton area. Unspecified spider compression fossils were mentioned as occurring in passing by David Greenwood et al. (2005) while discussing the increasing taxonomic richness of the highlands, but without specific site information. Additionally, undiscussed amber fossils were mentioned by Poinar et al. (1999) in their initial report of Hat Creek amber inclusions. Other arachnid evidence has been recovered in the form of fossil hymenopterans placed in families known predate or parasitize spiders. A diverse undescribed fauna of the "parasitoid" wasp family Ichneumonidae is known, some species of which are known to parasitize eggs or adult spiders. Another family, Sphecidae, which is a documented opportunistic predator of spiders and certain insets is known from a few isolated fossils at McAbee and Republic. Lastly the vespoid family Pompilidae has been found at both McAbee and Republic. This family, known as spider wasps, are behaviorally specialized as predators of spiders and a few other arachnids, provisioning newly laid eggs with a single spider as a larder to feed on while developing. Galling preserved on Acer species leaf fossils has been attributed to mites in the family Eriophyidae.
| Family | Genus | species | Sites | Notes |
| Araneidae | Unidentified | Unidentified | Princeton | An orb-weaver spider Not described to genus/species |
| Pisauridae | Palaeoperenethis | Palaeoperenethis thaleri | Horsefly | A Nursery web spider |
| Eriophyidae | Unidentified | Unidentified | Republic | Trace fossils Eriophyid gall mite galling on Acer leaves Not described to genus/species |
| Unidentified | Unidentified | Unidentified | "Kamloops sites" Tranquille or Falkland McAbee | Spider Compression fossils from Kamloops area locations Not described to family/genus/species |
| Unidentified | Unidentified | Unidentified | McAbee | Possible Araneidae? or Tetragnathidae? fossils Not described to family/genus/species |
| Unidentified | Unidentified | Unidentified | Unspecified | Spider compression fossils from unspecified highlands locations Not described to family/genus/species |
| Unidentified | Unidentified | Unidentified | Hat Creek | Spider specimens in amber Not described to family/genus/species |

## Crustaceans

The earliest report of Crayfish from the highlands was by Wesley Wehr and Lisa Barksdale (1995). In a short Washington Geology article they reported the first identified occurrence of feathers from the Klondike Mountain Formation and crayfish from both there and the McAbee site. At that time, the moulted carapace section from Republic was not identified further than as a freshwater crayfish. The McAbee specimen was tentatively identified, from photograph, as being a possible Procambarus species fossil by malacologist Rodney M. Feldmann. Subsequently an additional series of over ten fossils were recovered from McAbee and described in 2011 as Aenigmastacus crandalli by Feldmann, Carrie Schweitzer, and John Leahy. A. crandalli was placed in the southern hemisphere superfamily Parastacoidea based on several morphological characters, and they noted this species to be the only northern hemisphere member of the superfamily.
At the Quilchena site, brief mention was reported in 2016 of ostracod fossils, though no further discussion or description has happened.
| Family | Genus | species | Sites | Notes | Images |
| Parastacidae | Aenigmastacus | Aenigmastacus crandalli | McAbee | A parastacid crayfish. first illustrated as Procambarus sp. (1995) | |
| unidentified | Unidentified | unidentified | Republic | An unidentified crayfish | Crayfish moult undescribed |
| unidentified | Unidentified | unidentified | Quilchena | Unidentified ostracod shells | |

## Insects
### Blattodea

In the initial description of Hat Creek Amber, Poinar et al. make note of a single adult Corydiinae cockroach specimen found in the amber, with a brief commentary on the modern tropical-subtropical distribution of that subfamily and a lack of any native cockroach species in western Canada, but did not give any specific taxonomic identification for the specimen beyond that.
| Family | Genus | species | Sites | Notes | Images |
| Blaberidae | Undescribed | Undescribed | Driftwood McAbee Quilchena Republic | Undescribed Diplopterine cockroaches. | |
| Blattoidae | Undescribed | Undescribed | Republic | A blattoidean cockroach Not described to genus/species | Undescribed Blattoidea |
| Corydiidae | Unidentified | Unidentified | Hat Creek | An undescribed corydiine cockroach | |
| Hodotermitidae | Unidentified | Unidentified | McAbee | Harvester termites Not described to genus/species | |
| Mastotermitidae | Undescribed | Undescribed | Driftwood Falkland McAbee Horsefly Princeton | Darwin termites Not described to genus/species | |
| undescribed | Undescribed | Undescribed | Republic | Undescribed termites of uncertain affiliation | undescribed isopteran |

### Coleopterans

The order Coleoptera is divided into four major lineages, Adephaga, Archostemata, Myxophaga, and Polyphaga, with the last group being the most species diverse of the four. Hat Creek amber has provided one fully described beetle species Prionocerites tattriei, which is known from a larval stage specimen first reported by Poinar et al. (1999). The species and genus were the first North American taxon from the family to be described.

#### Adephaga

| Family | Genus | species | Sites | Notes | Images |
| Carabidae | Amara | †Amara paleomelas | Quilchena | A sun beetle First described as Nebria paleomelas | Amara paleomelas (1890 illustration) |
| Carabidae | Cf. Amara | Undescribed | Quilchena | A sun beetle relative | |
| Carabidae | Undescribed | Undescribed | McAbee Quilchena Republic | Undescribed ground beetles. | Unidentified Carabidae |
| Dytiscidae | Undescribed | Undescribed | Republic | A diving beetle | |
| Undescribed | Undescribed | Undescribed | Princeton | A caraboid superfamily beetle Displays traits similar to both tiger beetles and scarabs not identified to genus or species | |

#### Archostemata

| Family | Genus | species | Sites | Notes | Images |
| Cupedidae | Undescribed | Undescribed | McAbee | Reticulated beetles Not described to genus/species | |

#### Polyphaga
##### Cucujiformia

| Family | Genus | species | Sites | Notes | Images |
| Brentidae | †Eoceneithycerus | †Eoceneithycerus carpenteri | Republic | An Ithycerinae weevil | Eoceneithycerus carpenteri |
| Brentidae | †Ithyceroides | †Ithyceroides klondikensis | Republic | An Ithycerinae weevil | |
| Cerambycidae | Undescribed | Undescribed | McAbee Quilchena? Republic | long-horn beetles Not described to genus/species | |
| Chrysomelidae | †Cryptocephalites | †Cryptocephalites punctatus | Princeton | A leaf beetle | Cryptocephalites punctatus (1895 illustration) |
| Chrysomelidae | Galerucella | †Galerucella picea | Princeton | A leaf beetle | Galerucella picea (1890 illustration) |
| Chrysomelidae | Caryobruchus–Speciomerus genus group | Undescribed | Driftwood? McAbee Quilchena Republic | palm beetles, originally identified as cf. tribe Caryopemina. | |
| Chrysomelidae | Undescribed | Undescribed | McAbee Republic | leaf beetles Not described to genus/species | |
| Curculionidae | Undescribed | Undescribed | Horsefly McAbee Quilchena Republic | Undescribed weevils | |
| Mordellidae | Undescribed | Undescribed | McAbee | Pintail beetles Not described to genus/species |
| Prionoceridae | †Prionocerites | †Prionocerites tattriei | Hat Creek | A Prionocerid beetle Described from a larval specimen First reported by Poinar et al. (1999 Fig.7) as "A beetle larva" | |
| Tenebrionidae | Tenebrio | †Tenebrio primigenius | Princeton | A darkling beetle | Tenebrio primigenius (1890 illustration) |
| Cf. Cleridae | Undescribed | Undescribed | McAbee | Undescribed checkered beetle relatives | |
| Cf. Erotylidae | Undescribed | Undescribed | Quilchena | Undescribed pleasing fungus beetle relatives. | |
| Unidentified | Undescribed | Undescribed | Republic | A cucujiform beetle not identified to family | |

##### Elateriformia

| Family | Genus | species | Sites | Notes | Images |
| Buprestidae | Buprestis | †Buprestis saxigena | Quilchena | A jewel beetle | Buprestis saxigena (1890 illustration) |
| Buprestidae | Buprestis | †Buprestis sepulta | Quilchena | A jewel beetle | Buprestis sepulta (1890 illustration) |
| Buprestidae | Buprestis | †Buprestis tertiaria | Quilchena | A jewel beetle | Buprestis tertiaria (1890 illustration) |
| Cantharidae | Undescribed | Undescribed | McAbee(?) Princeton | A soldier beetle not identified to genus or species | |
| Elateridae | Ligmargus | †Ligmargus terrestris | Quilchena | A click beetle First described as Cryptohypnus? terrestris | Ligmargus terrestris (1890 illustration) |
| Elateridae | Limonius | †Limonius impunctus | Princeton | a click beetle | Limonius impunctus (1895 illustration) |
| Elateridae | †Elaterites | undescribed | Quilchena | A click beetle. | Elateridae sp. indet (1890 illustration) |
| Elateridae | Undescribed | Undescribed | McAbee Princeton Republic | undescribed click beetles | |

##### Scarabaeiformia

| Family | Genus | species | Sites | Notes | Images |
| Lucanidae | Undescribed | Undescribed | Republic | A stag beetle | |
| Passalidae | Undescribed | Undescribed | McAbee | Bess beetles Not described to genus/species |
| Trogidae | Trox | †Trox oustaleti | Princeton | A hide beetle | Trox oustaleti (1890 illustration) |
| Undescribed | Undescribed | Undescribed | Quilchena | Undescribed scarab superfamily beetles. | |

##### Staphyliniformia

| Family | Genus | species | Sites | Notes | Images |
| Hydrophilidae | Cercyon? | †Cercyon? terrigena | Quilchena | A water scavenger beetle | Cercyon? terrigena (1890 illustration) |
| Staphylinidae | Undescribed | Undescribed | Quilchena | Undescribed Omaliinae rove beetles. | |
| Unidentified | Undescribed | Undescribed | Republic | A possible staphylinoid beetle not described | |

### Dermapterans

Earwig fossils were first noted from republic by paleoentomologist Standley Lewis (1992) in his initial report of the insect diversity at Republic. He noted the fossils to be some of the oldest Eocene demapterans in North America at that time and figured one undescribed specimen consisting of a females abdomen section and cerci. Lewis (1994) tentatively identified the earwigs as members of family Forficulidae based on the shape of the cerci, and illustrated four female fossils, identified as such from the simple straight nature of the cercus. Lewis also suggested two different species were present, based on the differing lengths of the female cerci.
| Family | Genus | species | Sites | Notes | Images |
| ?Forficulidae | Undescribed | "Forficulid species 1" | Republic | A forficulid? earwig species with long cerci | "Forficulid species 1" undescribed |
| ?Forficulidae | Undescribed | "Forficulid species 2" | Republic | A forficulid? earwig species with short cerci | "Forficulidae species 2" undescribed |
| ?Forficulidae | Undescribed | Unidentified | McAbee | A possible forficulid earwig Not described to genus/species | |
| Forficulidae | Undescribed | Undescribed | Quilchena | A forficuline earwig of undetermined placement | |

### Dipterans

The most common animal fossils at many of the highlands sites are bibionid march flies, with over twenty species from the genera Penthetria and Plecia described. The modern diversity of the family is greatest in lower latitudes, and Plecia only reaches northward to the warm temperate areas of southeastern North America. In the initial description of Hat Creek Amber, Poinar et al. make note of dipteran inclusions found in the deposit but did not give any specific taxonomic identification of taxa or illustrate any specimen.

#### Brachycera

| Family | Genus | species | Sites | Notes | Images |
| Agromyzidae | Undescribed | Undescribed | Princeton | Trace fossils Agromyzid leaf mining Not described to genus/species | |
| Dolichopodidae | Microphor | †Microphor defunctus | Princeton | A long-legged fly First described as Microphorus defunctus (1910), Moved to Microphor defunctus (1994) | Microphor defunctus (1910 illustration) |
| Empididae | Undescribed | Undescribed | Driftwood Horsefly Republic | dagger flies Not described to genus/species | |
| Pipunculidae | †Metanephrocerus | †Metanephrocerus belgardeae | Republic | A big headed fly | Metanephrocerus belgardeae |
| Pipunculidae | Indeterminate | indeterminate | Quilchena | Big headed flies, too incomplete to describe to genus | |
| Rhagionidae | Undescribed | Undescribed | Quilchena | snipe flies Not described to genus/species | |
| Syrphidae | Unidentified | Unidentified | Driftwood Horsefly McAbee Quilchena Republic | hover flies or, less likely, thick headed flies Not described to genus/species | |

#### Nematocera

The highlands have been noted for the number of Bibionid taxa named in the early work on British Columbian sites. Over 25 unique species have been ascribed to the fossils, with the current count sitting at 22, but doubt has been raised as to the true number of species present and around the generic affinities. The first species was described by Scudder (1879 from the Allenby Formation, while the largest number of species were named by Handlirsch (1910). Following the practice of the time, both Scudder and Handlirsch placed their species in the genus Penthetria. Harrington Molesworth Anthony Rice (1959) reviewed the British Columbian bibionids, notably deeming the majority of species as belonging to Plecia or an undescribed extinct genus and not Penthetria. This placement decision has been questioned however, with Giuseppe Gentilini (1991) asserting the majority of highlands species should be returned to Penthetria. Rice, noted to be a "splitter", also noted the large overlap between the morphology of two species groups and mused that larger collection samples may reveal each group to be single species. He called out in the species discussions the similarities between Plecia avus, P. canadensis, P. dilatata, P. pictipennis, P. pulchra, and P. transitoria, and the similarities between P. curtula, P. nana, P. pulla, and P. reducta.
| Family | Genus | species | Sites | Notes | Images |
| Bibionidae | Penthetria? | †Penthetria? fryi | Driftwood Princeton | A possible penthetrian march fly | Penthetria (?) fryi |
| Bibionidae | Penthetria | †Penthetria intermedia | Driftwood | A plecian marchfly First described as Mycetophaetus intermedius (1892), moved to Plecia intermedia (1959) moved to Penthetria intermedia (1999) | |
| Bibionidae | Penthetria | †Penthetria whipsawensis | Princeton | A penthetrian march fly | Penthetria whipsawensis |
| Bibionidae | Plecia | †Plecia angustipennis | Horsefly Quilchena | A plecian marchfly First described as Penthetria angustipennis (1910), moved to Plecia angustipennis (1959) | Plecia angustipennis |
| Bibionidae | Plecia | †Plecia avus | Driftwood Tranquille Princeton | A plecian marchfly First described as Penthetria avus (1910), moved to Plecia avus (1959) Possibly synonymous with Pl. canadensis, Pl. dilatata, Pl. pictipennis, Pl. pulchra, and Pl. transitoria | Plecia avus |
| Bibionidae | Plecia | †Plecia cairnesi | Driftwood Falkland | A plecian marchfly | Plecia cairnesi |
| Bibionidae | Plecia | †Plecia canadensis | Driftwood Quilchena? Princeton Tranquille | A plecian marchfly First described as Penthetria canadensis (1910), moved to Plecia canadensis (1959) Possibly synonymous with Pl. avus Pl. dilatata, Pl. pictipennis, Pl. pulchra, and Pl. transitoria | Plecia canadensis |
| Bibionidae | Plecia | †Plecia curtula | Driftwood Horsefly Princeton | A plecian marchfly First described as Penthetria curtula (1910), moved to Plecia curtula (1959) Pe. avunculus (1910) considered a jr synonym (1959) Possibly synonymous with Pl. nana, Pl. pulla, and Pl. reducta | Plecia curtula |
| Bibionidae | Plecia | †Plecia dilatata | Horsefly Princeton | A plecian marchfly First described as Penthetria dilatata (1910), moved to Plecia dilatata (1959) Possibly synonymous with Pl. avus, Pl. canadensis, Pl. pictipennis, Pl. pulchra, and Pl. transitoria | Plecia dilatata |
| Bibionidae | Plecia | †Plecia elatior | Princeton | A plecian marchfly First described as Penthetria elatior (1910), moved to Plecia elatior (1959) | Plecia elatior |
| Bibionidae | Plecia | †Plecia kelownaensis | Driftwood Mission Creek | A plecian marchfly | Plecia kelownaensis |
| Bibionidae | Plecia | †Plecia minutula | Princeton | A plecian marchfly | Plecia minutula |
| Bibionidae | Plecia | †Plecia nana | Princeton | A plecian marchfly First described as Penthetria nana (1910), moved to Plecia nana (1959) Possibly synonymous with Pl. curtula, Pl. pulla, and Pl. reducta | Plecia nana |
| Bibionidae | Plecia | †Plecia pictipennis | Princeton Quilchena | A plecian marchfly First described as Penthetria pictipennis (1910), moved to Plecia pictipennis (1959) Pe. lambei (1910), Pe. ovalis (1910), & Pe. separanda (1910) considered jr synonyms (1959) Possibly synonymous with Pl. avus, Pl. canadensis, Pl. dilatata, Pl. pulchra, and Pl. transitoria | Plecia pictipennis |
| Bibionidae | Plecia | †Plecia platyptera | Horsefly | A plecian marchfly First described as Penthetria platyptera (1910), moved to Plecia platyptera (1959) | Plecia platyptera |
| Bibionidae | Plecia | †Plecia pulchra | Princeton | A plecian marchfly First described as Penthetria pulchra (1910), moved to Plecia pulchra (1959) Possibly synonymous with Pl. avus, Pl. canadensis, Pl. dilatata, Pl. pictipennis, and Pl. transitoria | Plecia pulchra |
| Bibionidae | Plecia | †Plecia pulla | Princeton | A plecian marchfly First described as Penthetria pulla (1910), moved to Plecia pulla (1959) Pe. brevipes (1910) considered a jr synonym (1959) Possibly synonymous with Pl. curtula, Pl. nana, and Pl. reducta | Plecia pulla |
| Bibionidae | Plecia | †Plecia reducta | Driftwood Horsefly Princeton | A plecian marchfly First described as Penthetria reducta (1910), moved to Plecia reducta (1959) Possibly synonymous with Pl. curtula, Pl. nana, and Pl. pulla | Plecia reducta |
| Bibionidae | Plecia | †Plecia similkameena | Princeton Tranquille | A plecian marchfly First described as Penthetria similkameena (1879) moved to Plecia similkameena (1885) | Plecia similkameena |
| Bibionidae | Plecia | †Plecia transitoria | Driftwood Horsefly Princeton Tranquille | A plecian marchfly First described as Penthetria transitoria (1910), moved to Plecia transitoria (1959) Pe. falcatula (1910) & Pe. fragmentum (1910) considered jr synonyms (1959) Possibly synonymous with Pl. avus, Pl. canadensis, Pl. dilatata, Pl. pictipennis, and Pl. pulchra | Plecia transitoria |
| Bibionidae | Plecia | †Plecia tulameenensis | Princeton Tranquille | A plecian marchfly | Plecia tulameenensis |
| Bibionidae | Undescribed | Undescribed | Republic | A march fly Not described to genus/species | Bibionidae undescribed |
| Bolitophilidae | Undescribed | Undescribed | Horsefly | A bolitophilid fungus gnat Not described to genus/species | |
| Cecidomyiidae | Undescribed | Undescribed | Princeton Republic | Trace fossils Cecidomyiid midge galling on various host leaves Not described to genus/species | Cecidomyiidae gall on Prunus |
| Cylindrotomidae | Unidentified | Unidentified | McAbee | long-bodied craneflies Not described to genus/species |
| Keroplatidae | Undescribed | Undescribed | Horsefly | A possible keroplatid fungus gnat Not described to genus/species | |
| Limoniidae | Unidentified | Unidentified | McAbee | Limoniid craneflies Not described to genus/species | |
| Mycetophilidae | Undescribed | Undescribed | Horsefly | A gnoristine fungus gnat Not described to genus/species | |
| Mycetophilidae | Undescribed | Undescribed | Horsefly | A leiine fungus gnat Not described to genus/species | |
| Mycetophilidae | Undescribed | Undescribed | Horsefly | A mycetophiline fungus gnat Not described to genus/species | |
| Mycetophilidae | Undescribed | Undescribed | Horsefly | A mycomyiine fungus gnat Not described to genus/species | |
| Mycetophilidae | Undescribed | Undescribed | Horsefly | A sciophiline fungus gnat Not described to genus/species | |
| Mycetophilidae | Undescribed | Undescribed | Driftwood McAbee Quilchena Princeton Republic | fungus gnats unplaced to subfamily Not described to genus/species | |
| Ptychopteridae | †Etoptychoptera | †Etoptychoptera tertiaria | Princeton | A phantom cranefly | Etoptychoptera tertiaria (1910 illustration) |
| Sciaridae | Unidentified | Unidentified | Driftwood Horsefly Quilchena | dark-winged fungus gnats Not described to genus/species | |
| Tipulidae | Tipula | †Tipula tulameena | Princeton | A cranefly | Tipula tulameena (1910 illustration) |
| Tipulidae | Undescribed | Undescribed | Driftwood Horsefly McAbee Princeton Quilchena Republic | crane flies Not described to genus/species | Undescribed Tipulidae |
| Trichoceridae | Unidentified | Unidentified | McAbee | winter craneflies Not described to genus/species |
| Unidentified | Unidentified | Unidentified | Hat Creek | Unidentified dipteran specimens in amber | |

### Ephemeropterans

Lewis (1992) listed one species of Heptageniidae and three specimens that he did not place to family from Republic. The next year Lewis and Wehr (1993) gave a slightly more detailed description of the specimens again identifying one to Heptageniidae, possibly in the genera Heptagenia or Stenonema. The specimens were later examined by Nina D. Sinitchenkova (1999) who described one as a squaregill mayfly and the oldest member of the genus Neoephemera, confirmed the Heptageniidae identification but that it was unidentifiable to genus. The last specimen she confirmed as an ephemeropteran, but unidentifiable below order level.
| Family | Genus | species | Sites | Notes | Images |
| Heptageniidae | Indeterminate | Indeterminate | McAbee Republic | A flat headed mayfly not identifiable to genus | Heptageniidae incertae sedis |
| Neoephemeridae | Neoephemera | †Neoephemera antiqua | Republic | A squaregill mayfly | |

### Hemipterans

Greenwood et al. (2005) briefly discussed the prevalence of Aphid fossils at highlands sites where the taphonomic factors allowed for fine detail preservation such as in the Driftwood shales. Poinar et al. (1999) made note of hemipteran specimens found in Hat Creek Amber but did not give any specific taxonomic identification or illustrate any specimens.

#### Auchenorrhyncha

| Family | Genus | species | Sites | Notes | Images |
| Aphrophoridae | Aphrophora | Aphrophora angusta | Princeton | An aphrophorine spittle bug hindwing species. | Aphrophora angusta (1910 illustration) |
| Aphrophoridae | Aphrophora | "Indeterminate" | Princeton | An aphrophorine spittle bug not described to species. | |
| Aphrophoridae | Aphrophora | Undescribed | Republic | An aphrophorid spittlebug Not described to species. | Aphrophora species |
| Aphrophoridae | †Palaeoptysma | †Palaeoptysma venosa | Princeton | A spittle bug | Palaeoptysma venosa (1895 illustration) |
| Aphrophoridae | †Palaphrodes | "Indeterminate" | Princeton | An aphrophorine spittle bug not described to species. | |
| Aphrophoridae | †Petrolystra | Undescribed | Republic | An aphrophorid spittlebug Not described to species. | |
| Aphrophoridae | †Ptysmaphora | †Ptysmaphora fletcheri | Princeton | A spittle bug | Ptysmaphora fletcheri (1895 illustration) |
| Cercopidae | Cercopis | †Cercopis grandescens | Princeton | A froghopper | Cercopis grandescens (1895 illustration) |
| Cercopidae | Cercopis | †Cercopis selwyni | Princeton | A froghopper | Cercopis selwyni (1890 illustration) |
| Cercopidae | †Cercopites | †Cercopites torpescens | Princeton | A froghopper | Cercopites torpescens (1895 illustration) |
| Cercopidae | †Dawsonites | †Dawsonites veter | Princeton | A froghopper | Dawsonites veter (1895 illustration) |
| Cercopidae | †Palecphora | Undescribed | Princeton Republic | A froghopper not described to species. | |
| Cercopidae | †Stenecphora | †Stenecphora punctulata | Princeton | A froghopper | Stenecphora punctulata (1895 illustration) |
| Cercopidae | †Stenolocris | †Stenolocris venosa | Princeton | A froghopper | Stenolocris venosa (1895 illustration) |
| Cercopidae | Undescribed | Undescribed | Driftwood McAbee Quilchena Republic | cercopid froghoppers Not described to genus/species. | undescribed Cercopidae |
| Cicadellidae | Coelidia | †Coelidia columbiana | Princeton | A leafhopper | Coelidia columbiana (1890 illustration) |
| Cicadellidae | Undescribed | Undescribed | Driftwood McAbee Quilchena | leafhoppers Not described to genus/species. | |
| Cicadidae | Undescribed | Undescribed | McAbee | True cicadas Not described to Family/genus/species | |
| Cixiidae | Undescribed | Undescribed | Quilchena | A cixiid planthopper Not described to genus/species. | |
| Fulgoridae | Enchophora | "Indeterminate" | Princeton | An enchophorine lantern bug not described to species. | |
| Ricaniidae | Undescribed | Undescribed | McAbee Quilchena | A ricaniid planthopper Not described to genus/species. | |
| Undescribed | Undescribed | Undescribed | Republic | A fulgoroidean hopper Not described to family/genus/species. | |
| Incertae sedis | †Planophlebia | †Planophlebia gigantea | Princeton | A hemipteran of uncertain placement | Planophlebia gigantea (1890 illustration) |

#### Heteroptera

| Family | Genus | species | Sites | Notes | Images |
| Cf. Coreidae | Undescribed | Undescribed | McAbee | Relatives of leaf-footed bugs Not described to Family/genus/species | |
| Cydnidae | Undescribed | Undescribed | Quilchena | A cydnid burrowing bug Not described to genus/species. | |
| Dinidoridae | Megymenum | Undescribed | Quilchena | A dinidorid shield bug Not described to genus/species. | |
| Gerridae | Gerris | Undescribed | McAbee | gerrine water striders Not described to genus/species | |
| Gerridae | Limnoporus | †Limnoporus wilsoni | Driftwood | A gerrine water strider | |
| Gerridae | †Telmatrechus | †Telmatrechus defunctus | Quilchena | A gerrine water strider First described as "Gerris" defunctus (1910) | Telmatrechus defunctus (1910 illustration) |
| Gerridae | †Telmatrechus | †Telmatrechus stali | Princeton | A gerrine water strider First described as "Hygrotrechus" stali (1879), later moved to "Gerris" stali (1910) | Telmatrechus stali (1890 illustration) |
| Pentatomidae | Undescribed | Undescribed | Princeton Republic | A Shield or stink bug Not described to genus/species | undescribed Pentatomidae |
| Cf. Pentatomidae | Undescribed | Undescribed | Quilchena | Pentatomoid shield bugs of uncertain familial placement Not described to genus/species. | |

#### Sternorrhyncha

| Family | Genus | species | Sites | Notes |
| Aphididae | Undescribed | Undescribed | McAbee Quilchena Republic | Aphids Not described to genus/species. |
| Aphididae | Undescribed | Undescribed | Republic | Trace fossils Woolly aphid leaf rolling on Ulmus leaves Not described to genus/species |
| Unidentified | Unidentified | Unidentified | Driftwood | aphidoid specimens Not described to genus/species |

#### Unidentified

| Family | Genus | species | Sites | Notes | Images |
| Unidentified | Unidentified | Unidentified | Hat Creek | Hemipterans in amber Not identified in any finer taxonomic detail | |

### Hymenopterans

Archibald, Mathewes, & Aase (2023) reported a Titanomyrma species ant queen from Allenby Formation, and noted the range extension for Formiciinae into the highlands, as the subfamily was previously considered a strictly thermophilic ant group. Due to complications arising from preservational distortion during diagenesis, they were unable to determine the correct size of the queen in life. If the distortion was lateral, then compression to bilateral symmetry yielded an adult length of approximately 3.3 cm (1.3 in), placing it the same range as Formicium berryi and F. brodiei, known only from wings, and suggested as possible males. Conversely stretching the fossil to bilateral symmetry results in a larger 5 cm (2.0 in) length estimate, placing it as comparable to queens of T. lubei and T. simillima.

#### Symphyta

| Family | Genus | species | Sites | Notes | Images |
| Cephidae | †Cuspilongus | †Cuspilongus cachecreekensis | McAbee | A cuspilongine cephid sawfly | |
| Cephidae | Undescribed | "Undescribed | Horsefly | A cephine cephid sawfly Not described to genus/species | |
| Cimbicidae | †Allenbycimbex | †Allenbycimbex morrisae | Princeton | A cenocimbicine cimbicid sawfly. | |
| Cimbicidae | †Leptostigma | †Leptostigma alaemacula | Republic | A cenocimbicine cimbicid sawfly. | |
| Cimbicidae | †Leptostigma | †Leptostigma brevilatum | McAbee Republic | A cenocimbicine cimbicid sawfly. | Leptostigma brevilatum? |
| Cimbicidae | †Leptostigma | †Leptostigma fasciatum | McAbee | A cenocimbicine cimbicid sawfly. | |
| Cimbicidae | †Leptostigma | †Leptostigma longiclava | McAbee | A cenocimbicine cimbicid sawfly. | |
| Cimbicidae | †Leptostigma | †Leptostigma longipallidum | McAbee | A cenocimbicine cimbicid sawfly. | |
| Cimbicidae | †Leptostigma | †Leptostigma longitenebricum | McAbee | A cenocimbicine cimbicid sawfly. | |
| Cimbicidae | †Leptostigma | †Leptostigma proxivena | McAbee | A cenocimbicine cimbicid sawfly. | |
| Cimbicidae | Unidentified | Unidentified | McAbee | A cimbicid sawfly of indeterminate subfamily. | |
| Pamphiliidae | †Ulteramus | †Ulteramus republicensis | Republic | A parasitic wasp | |
| Siricidae | †Eourocerus | †Eourocerus anguliterreus | Republic | A siricid horntail. | Eourocerus anguliterreus |
| Siricidae | †Ypresiosirex | †Ypresiosirex orthosemos | McAbee | A siricine siricid sawfly | |
| Tenthredinidae | Eriocampa | †Eriocampa tulameenensis | Princeton | An allantine tenthredinid sawfly | Eriocampa tulameenensis |
| Tenthredinidae | Pseudosiobla | †Pseudosiobla campbelli | Horsefly | An allantine tenthredinid sawfly | Pseudosiobla campbelli |
| Tenthredinidae | Undescribed | Undescribed | McAbee | Sawflys of the tenthredinid subfamily Allantinae Not described | |
| Tenthredinidae | Undescribed | Undescribed | McAbee | Sawflys of the tenthredinid subfamily Blennocampinae Not described | |
| Tenthredinidae | Undescribed | Undescribed | McAbee | Sawflys of the tenthredinid subfamily Nematinae Not described | |
| Tenthredinidae | Undescribed | Undescribed | McAbee | Sawflys of the tenthredinid subfamily Tenthredininae Not described | |
| Tenthredinidae | Undescribed | Undescribed | Driftwood Horsefly McAbee Quilchena Republic | Sawflys of the family Tenthredinidae, unplaced to subfamily Not described | |

#### Parasitoida

| Family | Genus | species | Sites | Notes | Images |
| Braconidae | Bracon | Undescribed | Princeton | A Bracon sensu lato species wasp. | Bracon sp. specimen 69&78 (1890 illustration) |
| Braconidae | Undescribed | Undescribed | Driftwood Horsefly McAbee Quilchena Republic | braconid parasitic wasps unplaced to subfamily Not described to genus/species | Unidentified Braconidae |
| Cynipidae | Undescribed | Undescribed | Princeton Republic | Trace fossils cynipid Cynipoid gallwasp galling on various host leaves Not described to genus/species | Cynipidae gall on Prunus |
| Cynipidae (?) | Undescribed | Undescribed | Horsefly Quilchena | cynipid Cynipoid gallwasps Not described to species | |
| Diapriidae | Undescribed | Undescribed | Driftwood Horsefly McAbee Republic | diapriid diaprioid wasps Not described to genus/species | |
| Figitidae | Undescribed | Undescribed | McAbee | figitid cynipoid wasps Not described to genus/species | |
| Heloridae | Undescribed | Undescribed | McAbee | helorid proctotrupoid wasps Not described | |
| Ichneumonidae | Xorides | †Xorides lambei | Princeton | A xoridine ichneumon parasitic wasp First described as Xylonomus lambei. | Xorides lambei (1910 illustration) |
| Ichneumonidae | Undescribed | Undescribed | Driftwood Horsefly McAbee Quilchena Princeton Republic | ichneumonid parasitic wasps unplaced to subfamily Not described | Undescribed Ichneumonidae |
| Megaspilidae | Undescribed | Undescribed | Hat Creek | ceraphronoid Megaspilid parasitic wasps Not described | |
| Monomachidae | Undescribed | Undescribed | McAbee | monomachid diaprioid wasps Not described | |
| Peradeniidae | Undescribed | Undescribed | McAbee | peradeniid proctotrupoid wasps Not described | |
| Proctotrupidae | Undescribed | Undescribed | Driftwood Horsefly McAbee Republic | proctotrupid parasitic wasps Not described | |
| Roproniidae | Undescribed | Undescribed | Republic | roproniid (sensu lato) proctotrupoid wasps Not described | |
| incertae sedis | Undescribed | Undescribed | Driftwood Hat Creek McAbee | Chalcidoid superfamily wasps Not described to family/genus/species | |
| incertae sedis | Undescribed | Undescribed | Hat Creek | mymarommatoid microhymenopterans Not described to family/genus/species | |

#### Non-apoidean Aculeates

| Family | Genus | species | Sites | Notes |
| Chrysididae | Undescribed | Undescribed | McAbee | Chrysidoid wasps of the chrysidid subfamily Chrysidinae Not described to genus/species |
| Pompilidae | Undescribed | Undescribed | McAbee Republic | pompilid spider wasps Not described |
| Scoliidae | Undescribed | Undescribed | Princeton Republic | Scoliid wasps of the subfamily Archaeoscoliinae Not described |
| Trigonalidae | Undescribed | Undescribed | Falkland Quilchena | trigonalid parasitic wasps Not described |
| Vespidae | Undescribed | Undescribed | Driftwood McAbee Princeton Quilchena Republic | Vespid wasps Not described |

#### Formicoidea

| subfamily | Genus | species | Sites | Notes | Images |
| Dolichoderinae | Dolichoderus | Undescribed | Hat Creek | Dolichoderus species ants. Not described to species | |
| Dolichoderinae | Undescribed | Undescribed | McAbee | Dolichoderine ants. Not described to genus/species | |
| Formiciinae | †Titanomyrma | Indeterminate | Princeton | A formiciine titan ant. Unplaced to species | Titianomyrma sp. |
| Formicinae | †Eoecophylla | †Eoecophylla quilchenensis | Quilchena | A weaver ant related to modern Oecophylla The most abundant ants at Quilchena | |
| Formicinae | Oecophylla | †Oecophylla kraussei | Republic | A weaver ant first described as Camponotites kraussei | |
| Formicinae | Indeterminate | indeterminate | McAbee | An weaver ant tribe worker Possibly belonging to either †Eoecophylla or Oecophylla | |
| Formicinae | Undescribed | Undescribed | Hat Creek | Formicinae subfamily ants. Not described to species First published as Technomyrmex by Poinar et al., (1999) | |
| Myrmeciinae | †Avitomyrmex | †Avitomyrmex elongatus | McAbee | A myrmeciine bulldog ant. | |
| Myrmeciinae | †Avitomyrmex | †Avitomyrmex mastax | McAbee | A myrmeciine bulldog ant. | |
| Myrmeciinae | †Avitomyrmex | †Avitomyrmex systenus | McAbee | A myrmeciine bulldog ant. | |
| Myrmeciinae | †Macabeemyrma | †Macabeemyrma ovata | McAbee | A myrmeciine bulldog ant. | |
| Myrmeciinae | †Myrmeciites | †Myrmeciites? goliath | McAbee | A myrmeciine bulldog ant. | |
| Myrmeciinae | †Myrmeciites | †Myrmeciites? tabanifluviensis | Horsefly | A myrmeciine bulldog ant. | |
| Myrmeciinae | †Myrmeciites | †Myrmeciites herculeanus | McAbee | A myrmeciine bulldog ant. | |
| Myrmeciinae | †Myrmeciites | "Indeterminate" | Falkland Republic | bull dog ants not distinct to species | Myrmeciities sp. |
| Myrmeciinae | †Propalosoma | †Propalosoma gutierrezae | Republic | A myrmeciine bulldog ant, first described as a rhopalosomatid wasp. | Propalosoma gutierrezae |
| Myrmeciinae | †Ypresiomyrma | †Ypresiomyrma bartletti | McAbee | A myrmeciine bulldog ant. | |
| Myrmeciinae | †Ypresiomyrma | †Ypresiomyrma orbiculata | McAbee | A myrmeciine bulldog ant. | Ypresiomyrma orbiculata |
| Myrmeciinae | Undescribed | Undescribed | McAbee | Myrmeciinae ants. Not described to species | |
| Myrmicine | Undescribed | Undescribed | Hat Creek | Myrmicine ants of either Leptothorax or Tetramorium Not described to species | |
| Incertae sedis | †Klondikia | †Klondikia whiteae | Republic | An ant of uncertain subfamily placement | |
| Incertae sedis | Undescribed | Undescribed | Driftwood Hat Creek Horsefly McAbee Princeton Quilchena Republic | Ants of uncertain subfamily placement. | Unidentified formicidae |

#### Apoidea

| Family | Genus | species | Sites | Notes | Images |
| Angarosphecidae | †Eosphecium | †Eosphecium naumanni | Quilchena | A spheciform wasp. | |
| Angarosphecidae | †Eosphecium | Undescribed | Driftwood McAbee Republic | Spheciform wasps. Not described to species | |
| Angarosphecidae | Undescribed | Undescribed | McAbee Princeton Republic | Spheciform wasps, likely not Eosphecium. Not described to species | |
| Apidae | Undescribed | Undescribed | McAbee | Apid bees Not described to species | |
| Halictidae (?) | Halictus? | †Halictus? savenyei | Quilchena | A sweat bee of uncertain generic placement | |
| Halictidae (?) | Undescribed | Undescribed | McAbee Republic | sweat bees Not described | |
| Megachilidae | Undescribed | Undescribed | Horsefly McAbee Republic | Megachilid leaf-cutter bee herbivory trace fossils on leaves Not described to species | Megachilidae damage on Prunus |
| Sphecidae | Undescribed | Undescribed | McAbee Republic | Sphecid (sensu stricto) wasps Not described | |

### Lepidoptera

A solitary complete adult female lepidopteran fossil has been recovered, but no full descriptive work has been published on the specimen, aside from a single PhD dissertation. Early examination placed the moth in the family Geometridae, but later work has identified it as the oldest member of the tiger moth subfamily Arctiinae. Two additional isolated wing fossils have been found with one tentatively placed within Noctuidae based on the wing venation and structure, while the second has not been placed beyond order level. Laval mining and hole feeding damage on leaves has been attributed to the families Coleophoridae, Gracillariidae, Heliozelidae, Incurvariidae, and Nepticulidae
| Family | Genus | species | Sites | Notes | Images |
| Coleophoridae | Cf. Coleophora | Undescribed | Republic | Trace fossils Coleophorid hole feeding and larval cases similar to Coleophora Not described to genus/species | |
| Erebidae | Undescribed | Undescribed | Republic | An arctiine tiger moth Not described to genus/species | Arctiinae undescribed |
| Gracillariidae | Undescribed | Undescribed | McAbee | Trace fossils Gracillariid leaf mining similar to Phyllocnistinae subfamily mines Not described to genus/species | |
| Heliozelidae | Undescribed | Undescribed | Republic | Trace fossils heliozelid leaf mining similar to Antispila mines Not described to genus/species | |
| Incurvariidae | Aff. Incurvaria | Undescribed | Republic | Trace fossils incurvariid leaf mining similar to Incurvaria Not described to genus/species | |
| Nepticulidae | Stigmella | Undescribed | Republic | Trace fossils nepticulid leaf mining referred to Stigmella Not described to genus/species | |
| Pyralidae? | Stigmella | Undescribed | Republic | Trace fossils nepticulid leaf mining referred to Stigmella Not described to genus/species | |
| Noctuidae | Undescribed | Undescribed | Quilchena | A possible owlet moth Not described to genus/species | |
| Undescribed | Undescribed | Undescribed | Princeton chert | A lepidopteran forewing Not described to family/genus/species | |

### Mecopterans

| Family | Genus | species | Sites | Notes | Images |
| Bittacidae | Undescribed | Undescribed | McAbee | hangingfly specimens Not described to genus/species | |
| †Cimbrophlebiidae | †Cimbrophlebia | †Cimbrophlebia brooksi | Republic | A Cimbrophlebiid scorpionfly | Cimbrophlebia brooksi |
| †Cimbrophlebiidae | †Cimbrophlebia | †Cimbrophlebia flabelliformis | McAbee | A Cimbrophlebiid scorpionfly | |
| †Cimbrophlebiidae | †Cimbrophlebia | †Cimbrophlebia leahyi | McAbee | A Cimbrophlebiid scorpionfly | |
| †Cimbrophlebiidae | †Cimbrophlebia | †Cimbrophlebia westae | Republic | A Cimbrophlebiid scorpionfly | Cimbrophlebia westae |
| †Dinopanorpidae | †Dinokanaga | †Dinokanaga andersoni | Republic | A Dinopanorpid scorpion fly | Dinokanaga andersoni |
| †Dinopanorpidae | †Dinokanaga | †Dinokanaga dowsonae | Falkland Horsefly McAbee Republic | A Dinopanorpid scorpion fly | Dinokanaga dowsonae |
| †Dinopanorpidae | †Dinokanaga | †Dinokanaga hillsi | McAbee | A Dinopanorpid scorpion fly | |
| †Dinopanorpidae | †Dinokanaga | †Dinokanaga sternbergi | Republic | A Dinopanorpid scorpion fly | |
| †Dinopanorpidae | †Dinokanaga | †Dinokanaga webbi | Horsefly | A Dinopanorpid scorpion fly | |
| †Dinopanorpidae | †Dinokanaga | †Dinokanaga wilsoni | Princeton | A Dinopanorpid scorpion fly | |
| Eomeropidae | †Eomerope | †Eomerope eonearctica | McAbee | An Eomeropid scorpionfly | |
| Eomeropidae | †Eomerope | †Eomerope macabeensis | McAbee | An Eomeropid scorpionfly | |
| Eomeropidae | †Eomerope | †Eomerope simpkinsae | Princeton | An Eomeropid scorpionfly | |
| †Eorpidae | †Eorpa | †Eorpa elverumi | Republic | An eorpid scorpionfly | Eorpa elverumi |
| †Eorpidae | †Eorpa | †Eorpa jurgeni | Quilchena | An eorpid scorpionfly | |
| †Eorpidae | †Eorpa | †Eorpa ypsipeda | Falkland? McAbee Republic? | An eorpid scorpionfly | Eorpa sp. possibly E. ypsipeda |
| †Holcorpidae | †Holcorpa | †Holcorpa dillhoffi | McAbee | A holcorpid scorpionfly | |
| Panorpidae | Undescribed | Undescribed | McAbee Republic | Undescribed common scorpionflies Not described to genus/species | |

### Neuropterans

| Family | Genus | species | Sites | Notes | Images |
| Berothidae | †Microberotha | †Microberotha macculloughi | Hat Creek | A beaded lacewing | |
| Chrysopidae | †Adamsochrysa | †Adamsochrysa aspera | McAbee | A nothochrysine green lacewing | |
| Chrysopidae | †Adamsochrysa | †Adamsochrysa wilsoni | Republic | A nothochrysine green lacewing | Adamsochrysa wilsoni |
| Chrysopidae | †Archaeochrysa | †Archaeochrysa profracta | McAbee | A nothochrysine green lacewing | |
| Chrysopidae | †Archaeochrysa | †Archaeochrysa sanikwa | Driftwood | A nothochrysine green lacewing | |
| Chrysopidae | †Lithochrysa | †Lithochrysa borealis | Driftwood | A nothochrysine green lacewing | |
| Chrysopidae | †Okanaganochrysa | †Okanaganochrysa coltsunae | McAbee | A nothochrysine green lacewing | |
| Chrysopidae | †Protochrysa | †Protochrysa fuscobasalis | McAbee | A limaiine green lacewing | |
| Chrysopidae | †Pseudochrysopa | †Pseudochrysopa harveyi | Driftwood | A nothochrysine green lacewing | |
| †Corydasialidae | †Ypresioneura | †Ypresioneura obscura | McAbee | A corydasialid lacewing First suggested to be a megalopterans, later deemed a neuropteran. | |
| Hemerobiidae | †Archibaldia | †Archibaldia wehri | Republic | A hemerobiid lacewing originally placed in †Cretomerobius Moved to †Proneuronema (2016) Moved to †Archibaldia (2023) | |
| Hemerobiidae | Wesmaelius | †Wesmaelius mathewesi | Quilchena | A hemerobiine brown lacewing. | |
| Hemerobiidae | Undescribed | Undescribed | McAbee | Brown lacewing specimens Not described to genus/species |
| Ithonidae | †Allorapisma | †Allorapisma chuorum | Republic | An Ithonid group moth lacewing | Allorapisma chuorum |
| Ithonidae | †Palaeopsychops | †Palaeopsychops dodgeorum | Quilchena | A polystechotid group moth lacewing First mentioned by Archibald & Mathewes 2000 as cf Osmylidae or Polystoechotidae | |
| Ithonidae | †Palaeopsychops | †Palaeopsychops douglasae | Quilchena | A polystechotid group moth lacewing | |
| Ithonidae | †Palaeopsychops | †Palaeopsychops marringerae | Republic | A polystechotid group moth lacewing | Palaeopsychops marringerae |
| Ithonidae | †Palaeopsychops | †Palaeopsychops setosus | Horsefly | A polystechotid group moth lacewing | |
| Ithonidae | †Palaeopsychops | †Palaeopsychops timmi | Republic | A polystechotid group moth lacewing | Palaeopsychops timmi |
| Ithonidae | †Polystoechotites | †Polystoechotites barksdalae | Republic | A polystechotid group moth lacewing | Polystoechotites barksdalae |
| Ithonidae | †Polystoechotites | †Polystoechotites falcatus | Republic | A polystechotid group moth lacewing | Polystoechotites falcatus |
| Ithonidae | †Polystoechotites | †Polystoechotites lewisi | Republic | A polystechotid group moth lacewing | Polystoechotites lewisi |
| Ithonidae | †Ricaniella | †Ricaniella antiquata | Princeton | A Polystoechotid-group moth lacewing moved from Ricania antiquata (1895) | Ricaniella antiquata (1895 illustration) |
| Ithonidae | Undescribed | Undescribed | McAbee | Polystoechotid-group moth lacewings Not described to genus/species | |
| Nymphidae | †Epinesydrion | †Epinesydrion falklandensis | Falkland | A split-footed lacewing, possibly sister species to †Nymphes georgei |
| Nymphidae | Nymphes | †Nymphes(?) georgei | Republic | A split-footed lacewing Possibly related to Epinesydrion | Nymphes georgei |
| Osmylidae | †Osmylidia | †Osmylidia donnae | Quilchena | A protosmyline osmylid lacewing | |
| Osmylidae | †Osmylidia | †Osmylidia glastrai | Republic | A protosmyline osmylid lacewing | |
| Osmylidae | †Osmylidia | Indeterminate | Driftwood | A protosmyline osmylid lacewing, not detailed enough for species description | |
| Osmylidae | Undescribed | Undescribed | McAbee | osmylid lacewing specimens Not described to genus/species | |
| Psychopsidae? | †Ainigmapsychops | †Ainigmapsychops inexspectatus | Republic | A possible psychopsid lacewing | Ainigmapsychops inexspectatus |
| Undescribed | Undescribed | Undescribed | McAbee | Members of an undescribed neuropteran family | |

### Odonata

Trace fossil evidence of damselflies has been recorded from oviposition scars on various leaves from the Klondike Mountain Formation that have been placed in the ichnogenus Paleoovoidus. Lewis and Carrol (1991) originally identified the damage on an Alnus parvifolia leaf as caused by leaf beetles of the genus Altica. This was later questioned by Conrad Labandeira who noted the scar patterns did not match modern Altica egg laying behaviour.
| Family | Genus | species | Sites | Notes | Images |
| Aeshnidae | †Antiquiala | †Antiquiala snyderae | Republic | A darner dragonfly | Antiquiala snyderae |
| Aeshnidae | †Eoshna | †Eoshna thompsonensis | McAbee | A darner dragonfly | |
| Aeshnidae | †Idemlinea | †Idemlinea versatilis | Republic | A darner dragonfly | Idemlinea versatilis |
| Aeshnidae | †Ypshna | †Ypshna brownleei | Republic | A darner dragonfly | Ypshna brownleei |
| Aeshnidae | †Ypshna | †Ypshna latipennata | McAbee | A darner dragonfly | |
| †Dysagrionidae | †Dysagrion | †Dysagrion pruettae | Republic | A Dysagrionine cephalozygopteran odonate | Dysagrion pruettae |
| †Dysagrionidae | †Dysagrionites | †Dysagrionites allenbyensis | Princeton | A probable dysagrionine cephalozygopteran odonate | |
| †Dysagrionidae | †Dysagrionites | †Dysagrionites delinei | Republic | A probable dysagrionine cephalozygopteran odonate | Dysagrionites delinei |
| †Dysagrionidae | †Okanagrion | †Okanagrion angustum | McAbee | A Dysagrionine cephalozygopteran odonate | |
| †Dysagrionidae | †Okanagrion | †Okanagrion beardi | McAbee | A Dysagrionine cephalozygopteran odonate | |
| †Dysagrionidae | †Okanagrion | †Okanagrion dorrellae | Republic | A Dysagrionine cephalozygopteran odonate | Okanagrion dorrellae |
| †Dysagrionidae | †Okanagrion | †Okanagrion hobani | McAbee Republic | A Dysagrionine cephalozygopteran odonate | Okanagrion hobani |
| †Dysagrionidae | †Okanagrion | †Okanagrion liquetoalatum | Republic | A Dysagrionine cephalozygopteran odonate | Okanagrion liquetoalatum |
| †Dysagrionidae | †Okanagrion | †Okanagrion lochmum | McAbee | A Dysagrionine cephalozygopteran odonate | |
| †Dysagrionidae | †Okanagrion | †Okanagrion threadgillae | Republic | A Dysagrionine cephalozygopteran odonate | Okanagrion threadgillae |
| †Dysagrionidae | †Okanagrion | †Okanagrion worleyae | Republic | A Dysagrionine cephalozygopteran odonate | Okanagrion worleyae |
| †Dysagrionidae | †Okanopteryx | †Okanopteryx fraseri | McAbee | A Dysagrionine cephalozygopteran odonate | |
| †Dysagrionidae | †Okanopteryx | †Okanopteryx jeppesenorum | Republic | A Dysagrionine cephalozygopteran odonate | Okanopteryx jeppesenorum |
| †Dysagrionidae | †Okanopteryx | †Okanopteryx macabeensis | McAbee | A Dysagrionine cephalozygopteran odonate | |
| †Dysagrionidae | †Paradysagrion | †Paradysagrion sosbyae | Republic | A dysagrionid cephalozygopteran odonate | |
| †Dysagrionidae | †Stenodiafanus | †Stenodiafanus westersidei | Republic | A Dysagrionine cephalozygopteran odonate | Stenodiafanus westersidei |
| Cf. †Dysagrionidae | †Allenbya | †Allenbya holmesae | Princeton | A possible Dysagrionidae odonate. Not to be confused with the Princeton Chert waterlily Allenbya | Allenbya holmesae |
| Euphaeidae | †Republica | †Republica weatbrooki | Republic | A gossamerwing damselfly. Not to be confused Republica, a plant genus also from Republic | Republica weatbrooki |
| Gomphidae | †Auroradraco | †Auroradraco eos | McAbee | A club-tailed dragonfly | |
| †Whetwhetaksidae | †Whetwhetaksa | †Whetwhetaksa millerae | Republic | A possible cephalozygopteran odonate | Whetwhetaksa millerae |

### Orthoptera

| Family | Genus | species | Sites | Notes | Images |
| Acrididae | Unidentified | Unidentified | McAbee | Catanopine short-horned grasshopper specimens Not described to genus/species | |
| Gryllacrididae? | Unidentified | Unidentified | McAbee | Possible leaf-rolling cricket specimens Not described to genus/species | |
| †Promastacidae | †Promastax | †Promastax archaicus | Horsefly | A Promastacid grasshopper | Promastax archaicus (1910 illustration) |
| †Palaeorehniidae | †Republicopteron | †Republicopteron douseae | Republic | A palaeorehniid ensiferan. | Republicopteron douseae |
| †Palaeorehniidae | †Ypopteron | †Ypopteron nicola | Quilchena | A palaeorehniid ensiferan. First identified as a prophalangopsine grig | |
| Prophalangopsidae | Unidentified | Unidentified | McAbee | grig specimens Not described to genus/species | |
| Tettigoniidae | Unidentified | Unidentified | McAbee | katydid specimens Not described to genus/species | |

### Phasmatodea

| Family | Genus | species | Sites | Notes | Images |
| Susumaniidae | †Eoprephasma | †Eoprephasma hichensi | McAbee Republic | A Susumaniine susumanioid stick insect | |

### Plecoptera

| Family | Genus | species | Sites | Notes | Images |
| Unidentified | Unidentified | Unidentified | McAbee | stonefly specimens Not described to family/genus/species | |

### Psocodea

The only reported Psocodea fossils from the highlands are known from Hat Creek amber. They were mentioned, as "Psocoptera", in passing by Poinar et al. (1999) who did not give any finer taxonomic detail or illustrate any specimens.
| Family | Genus | species | Sites | Notes | Images |
| Unidentified | Unidentified | Unidentified | Hat Creek | specimens in amber Not described to genus/species | |

### Raphidiopterans

| Family | Genus | species | Sites | Notes | Images |
| Inocelliidae | †Paraksenocellia | †Paraksenocellia borealis | Driftwood | An inocelliid snakefly | |
| Raphidiidae | †Archiinocellia | †Archiinocellia oligoneura | Horsefly | A Raphidiid snakefly | Archiinocellia oligoneura |
| Raphidiidae | †Megaraphidia | †Megaraphidia antiquissima | McAbee | A Raphidiid snakefly | |
| Raphidiidae | †Megaraphidia | †Megaraphidia hopkinsi | Princeton | A Raphidiid snakefly | |
| Raphidiidae | †Megaraphidia | †Megaraphidia klondika | Republic | A raphidiid snakefly | |
| Raphidiidae | †Megaraphidia | †Megaraphidia ootsa | Driftwood | A raphidiid snakefly | |

### Thrysanoptera

Poinar et al. (1999) illustrated a Thrips specimen in Hat Creek amber and noted the presence of the order in the fossils they examined, however they did not provide any finer taxonomic details on the affinities of the fossils.
| Family | Genus | species | Sites | Notes | Images |
| Unidentified | Unidentified | Unidentified | Hat Creek | specimens in amber Not described to genus/species | |

### Trichoptera

Trichopterans are known mainly from laraval cases and occasional isolated wings.
| Family | Genus | species | Sites | Notes | Images |
| Limnephilidae | Unidentified | unidentified | Republic | northern caddisflies Not described to genus/species | |
| Phryganeidae | Unidentified | Unidentified | Quilchena Republic | giant caddisflies Not described to genus/species | Phryganeidae larval case |
| Unidentified | Unidentified | Unidentified | Driftwood Horsefly McAbee Quilchena | Isolated wings and larval cases Not described to genus/species | |

## Vertebrates
### "Fish"

The first fish to be described from the Okanagan Highlands were recovered from Allenby Formation shales and subsequently studied by Edward Drinker Cope who named Amyzon brevipinne in 1894. The next descriptive work for a fish came in 1916 with the naming of "Lucious" rosei by Louis Hussakof from Tranquille Formation fossils collected at "Red point" on Kamloops Lake in 1914. "Lucious" rosei was redescribed in 1966 by Ted Cavander, who moved the species to a new genus Eohiodon placed into the mooneye family Hiodontidae. The largest body of work for fish of the Highlands was by Mark Wilson (1977) who published a monograph detailing the Canadian highlands formations fish fauna, naming four new species in three new genera, plus redescribing both "Amyzon" brevipinne and "Eohiodon" rosei. The monograph added the families Salmonidae with Eosalmo driftwoodensis, Libotoniidae with Libotonius blakeburnensis, and Moronidae with Priscacara aquilonia. A year later the first species from the Republic area, "Eohiodon" woodruffi was described by Wilson, and the second Republic species Libotonius pearsoni followed in 1979. in 1982 the final new fish species named from the highlands, Amia hesperia, was described, being initially placed by Wilson in the modern bowfin genus Amia. This placement was later questioned by Lance Grande and William Bemis (1998), who noted that due to preservational orientation of the A. hesperia holotype, generic placement of the species was problematic. Phylogenetic analysis of Amiidae fossils by Grande and Bemis found the fossil as a member of the amiinae subfamily, but with key mouth anatomy missing, were unable to determine if Amia or the extinct genus Cyclurus was correct. In 2021 fossils of "Amyzon" brevipinne were redescribed by Juan Liu based on the holotype and additional fossils from the Allenby Formation, and based on the anatomical differences between the species and the type species of Amyzon mentale determined that the Princeton fossils were part of a different genus. As such Liu moved the species to the new genus Wilsonium.
| Family | Genus | species | Sites | Notes | Images |
| Amiidae | Amia? | †Amia? hesperia | Princeton | A bowfin of uncertain genus placement | |
| Amiidae | Amia? | †Amia? hesperia? | Driftwood Princeton Quilchena Republic | isolated bowfin scales | Amia? scale |
| Catostomidae | †Amyzon | †Amyzon aggregatum | Horsefly Republic? | A sucker | |
| Catostomidae | †Amyzon | Unidentified | Driftwood McAbee Republic | A sucker Republic specimens formerly identified as A. aggregatum | Amyzon sp. |
| Catostomidae | †Wilsonium | †Wilsonium brevipinne | Princeton | A catostomid sucker, first described as Amyzon brevipinne (1894) Moved to Wilsonium brevipinne in 2021 | |
| Catostomidae | †Wilsonium | Cf. †Wilsonium brevipinne | Quilchena | A catostomid sucker, Not described to species similar to Wilsonium brevipinne | |
| Hiodontidae | Hiodon | †Hiodon rosei | Horsefly Kamloops Lake McAbee Princeton | A mooneye, first described as Lucious rosei (1916), Moved to Eohiodon rosei in 1966, Moved to Hiodon rosei in 2008 | |
| Hiodontidae | Hiodon | †Hiodon woodruffi | Horsefly Republic | A mooneye, first described as Eohiodon woodruffi. Moved to Hiodon woodruffi in 2008 | Hiodon woodruffi |
| Hiodontidae | Hiodon | Unidentified | Quilchena | A mooneye jaw. Not identified to species | |
| †Libotoniidae | †Libotonius | †Libotonius blakeburnensis | Princeton | A sand roller relative. | |
| †Libotoniidae | †Libotonius | †Libotonius pearsoni | Republic | A sand roller relative. | Libotonius pearsoni |
| Moronidae | †Priscacara | †Priscacara aquilonia | Horsefly | A temperate bass | |
| Salmonidae | †Eosalmo | †Eosalmo driftwoodensis | Driftwood Canyon McAbee Princeton Republic | A basal Salmon | Eosalmo driftwoodensis |
| Salmonidae | †Eosalmo | Cf. †Eosalmo driftwoodensis | Quilchena | A basal Salmon Not described to species Similar to E. driftwoodensis | |

### Reptiles

The only reptile fossils known from the Okanagan highlands come from the Allenby Formation. A soft-shelled turtle is known from the "Ashnola shales" unit and unidentified turtle bone are known from the interbedded Princeton Chert. The soft shelled turtle was first discovered by James Basinger from dark shale layers above the chert and reported by Wilson (1982). The unidentified turtle bones were found preserved within the chert layers and first reported by Stockey and Pigg (1994). In his 1995 Masters thesis, G. Guthrie listed an isolated tooth from the Quilchena site as from a crocodile, which would have been the only instance of a crocodylian in the highlands. The taxonomic affinity was later revised after further examination and Mathewes et al. (2016) listed the specimen as an unidentified fish tooth.
| Family | Genus | species | Sites | Notes | Images |
| Trionychidae | Cf. Apalone or Aspideretes | undescribed | Princeton | A soft shelled turtle Found in the Ashnola shales over the chert | |
| Undescribed | Undescribed | undescribed | Princeton chert | A turtle, Bones preserved in the Princeton Chert | |

### Birds

A small avifauna is known from the Okanagan Highlands, but due to the incomplete nature of the fossils, placement of studied specimens has been tentative at best. Gerald Mayr et al. (2019) published an initial overview of the fossils with descriptions and commentary of the material, noting the taxa identified were all previously unknown to Northwestern North American Eocene sites. Despite the tentative nature of the fossil identifications, the Highlands sites are the richest Paleogene avifauna described from Canada. Mayr et al. (2019) posited that the fossils likely represent the more common species in the avifauna of the Highlands, but at the same time, include taxa that are considered rare or absent in the most studied avifaunas from the same time frame. Additional evidence of birds at some sites consists of preserved egested bird pellets, which are composed of randomly grouped fish bone clumps, occasionally including multiple fish or insects.
Isolated feathers are also known from several of the sites and have not described in detail.
| Order/Clade | Family | Material | Sites | Notes | Images |
| Cf. Coliiformes | indeterminate | partial skeleton skull, left wing, and right wing portions | Driftwood | a large possible Coliiform, too incomplete for firm identification | |
| Cf. Gaviiformes | indeterminate | left wing and partial right wing, with feathers | McAbee | a possible gaviiform, too incomplete for firm identification | |
| Gruiformes | Cf. †Songziidae | articulated postcranial skeleton | Driftwood | A possible songziid bird, lacking specific morphologic characters for a firm placement. | |
| Psittacopasserae | Cf. †Zygodactylidae | complete, but poorly preserved, skeleton | McAbee | a possible zygodactylid, poor preservation of the foot prevented firm identification | |
| indeterminate | indeterminate | partial skeletons | McAbee Princeton Republic | partial skeletons missing details for identification. Republic specimen shows unique cranial pitting. | Indeterminate skeleton McAbee site |
| indeterminate | indeterminate | feathers | Horsefly McAbee Quilchena Republic | isolated feathers | unidentified feather, Republic |

### Mammals

Eocene mammals are exclusively known from sites in, or possibly in, the Okanagan Highlands. The earliest reported mammals were of teeth from the Princeton area in 1935, with one of the fossils subsequently being "lost". More recent work in 2014 and 2017 on fossils from Driftwood and Princeton have expanded the mammal families to three, possibly four, and an undescribed Quilchena fossil being identified as a "lipotyphla". The record of Brontotheriidae is uncertain due to the split opinion regarding inclusion of the Quesnel area sediments as part of the Highlands.
| Family | Genus | species | Sites | Notes | Images |
| Erinaceidae | †Silvacola | †Silvacola acares | Driftwood | A hedgehog and moonrat relative | |
| Erinaceidae | †Entomolestes | undescribed | Princeton | An unidentified hedgehog relative, specimen possibly lost. | |
| Esthonychidae | †Trogosus | †Trogosus latidens | Princeton | A tillodont species | |
| Esthonychidae | †Trogosus | †Trogosus sp. | Princeton | An indeterminate tillodont smaller than T. latidens | Trogosus hyracoides reconstruction |
| †Helaletidae | Cf. †Heptodon | indeterminate | Driftwood | A helaletid tapir relative. | Heptodon posticus reconstruction |
| undescribed | undescribed | undescribed | Quilchena | A "lipotyphlan" | |

## Trace fossils

Pellets of fish bone and other animal material which were likely eaten by larger predators and then regurgitated have been reported from the Quilchena and Republic sites. These traces, called regurgitalites, have so far been understudied, with only a few passing mentions in Okanagan highlands literature.

## Quesnelian fauna

If the Quesnel sites are included as part of the Greater Okanagan Highlands per Archibald et al. (2018) the fauna of the region is expanded by a number of insect taxa, an additional arachnid, and a brontothere.

### Quesnelian Arachnids

| Family | Genus | species | Sites | Notes | Images |
| Araneae | †Araneaovoius | †Araneaovoius columbiae | Quesnel | An orb-web spider egg sack. First described as "Aranea" columbiae (1878) | Araneaovoius columbiae (1890 illustration) |

### Quesnelian Coleopterans

| Family | Genus | species | Sites | Notes | Images |
| Nitidulidae | Prometopia | †Prometopia depilis | Quesnel | A sap beetle | Prometopia depilis (1890 illustration) |

### Quesnelian Dipterans

| Family | Genus | species | Sites | Notes | Images |
| Anthomyiidae | Anthomyia | †Anthomyia burgessi | Quesnel | An anthomyiid fly. Considered nomen dubium without discussion by Michelsen (1996). | Anthomyia burgessi (1890 illustration) |
| Anthomyiidae | Anthomyia | †Anthomyia inanimata | Quesnel | An anthomyiid fly. Considered nomen dubium without discussion by Michelsen (1996). | Anthomyia inanimata (1890 illustration) |
| Asilidae | Undescribed | Undescribed | Quesnel | An undescribed robber fly | |
| Dolichopodidae | Dolichopus | Undescribed | Quesnel | An undescribed long-legged fly. | Dolichopus sp. specimen 14651 (1890 illustration) |
| Heleomyzidae | Heteromyza | †Heteromyza senilis | Quesnel | A heleomyzid fly. | Heteromyza senilis (1890 illustration) |
| Lauxaniidae | "Lonchaea" | †"Lonchaea" senescens | Quesnel | A lauxaniid fly. First placed in Lonchaea Referred to Lauxaniidae without redescription.(1994) | "Lonchaea" senescens (1890 illustration) |
| Mycetophilidae | Boletina | †Boletina sepulta | Quesnel | A fungus gnat. | Boletina sepulta (1890 illustration) |
| Mycetophilidae | Brachypeza | †Brachypeza abita | Quesnel | A mycetophiline fungus gnat. | Brachypeza abita (1890 illustration) |
| Mycetophilidae | Brachypeza | †Brachypeza procera | Quesnel | A mycetophiline fungus gnat. | Brachypeza procera (1890 illustration) |
| Mycetophilidae | Trichonta | †Trichonta dawsoni | Quesnel | A mycetophiline fungus gnat. | Trichonta dawsoni (1890 illustration) |
| Pallopteridae | Palloptera | †Palloptera morticina | Quesnel | A flutter-wing fly. | Palloptera morticina (1890 illustration) |
| Sciaridae | Sciara | †Sciara deperdita | Quesnel | A sciarine dark-winged fungus gnat. | Sciara deperdita (1890 illustration) |
| Sciomyzidae | Sciomyza | †Sciomyza revelata | Quesnel | A marsh fly. | Sciomyza revelata (1890 illustration) |
| Ulidiidae | †Lithortalis | †Lithortalis picta | Quesnel | A picture-winged fly. | Lithortalis picta (1890 illustration) |

### Quesnelian Hemipterans

| Family | Genus | species | Sites | Notes | Images |
| Pentatomidae | †Teleoschistus | †Teleoschistus antiquus | Quesnel | A shield bug first described as "Euschistus" antiquus (1878). | Teleoschistus antiquus (1890 illustration) |
| Incertae sedis | †Geranchon | †Geranchon petrorum | Quesnel | An aphidomorph of uncertain placement First described as "Lachnus" petrorum (1877) | Geranchon petrorum (1890 illustration) |
| incertae sedis | †Sbenaphis | †Sbenaphis quesneli | Quesnel | An aphidoid of uncertain placement First described as "Lachnus" quesneli | Sbenaphis quesneli (1890 illustration) |

### Quesnelian Hymenopterans

| Family | Genus | species | Sites | Notes | Images |
| Formicidae | Aphaenogaster | †Aphaenogaster longaeva | Quesnel | A myrmicine ant, possibly nomen dubium. | Aphaenogaster longaeva (1890 illustration) |
| Formicidae | †Calyptites | †Calyptites antediluvianum | Quesnel | An ant of uncertain placement. | Calyptites antediluvianum (1890 illustration) |
| Formicidae | Dolichoderus | †Dolichoderus obliteratus | Quesnel | A dolichoderine ant First described as "Hypoclinea" obliterata | Dolichoderus obliteratus (1890 illustration) |
| Formicidae | Formica | †Formica arcana | Quesnel | A formicine ant | Formica arcana (1890 illustration) |
| Ichneumonidae | Pimpla | †Pimpla decessa | Quesnel | A pimpline ichneumon parasitic wasp | Pimpla decessa (1890 illustration) |
| Ichneumonidae | Pimpla | †Pimpla saxea | Quesnel | A pimpline ichneumon parasitic wasp | Pimpla saxea (1890 illustration) |
| Ichneumonidae | Pimpla | †Pimpla senecta | Quesnel | A pimpline ichneumon parasitic wasp | Pimpla senecta (1890 illustration) |

### Quesnelian Neuroptera

| Family | Genus | species | Sites | Notes | Images |
| Hemerobiidae | †Bothromicromus | †Bothromicromus lachlani | Quesnel | A hemerobiid lacewing of uncertain subfamily placement | Bothromicromus lachlani (1890 illustration) |

### Quesnelian Mammals

| Family | Genus | species | Sites | Notes | Images |
| Brontotheriidae | indeterminate | indeterminate | Quesnel | A Brontotheriina subtribe Brontothere Not identifiable to genus Known from isolated teeth | |