# 2015 in arthropod paleontology

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This list of fossil arthropods described in 2015 is a list of new taxa of trilobites, fossil insects, crustaceans, arachnids and other fossil arthropods of every kind that have been described during the year 2015. The list only includes taxa at the level of genus or species.

## Newly named arachnids

| Name | Novelty | Status | Authorship of new name | Age | Unit | Location | Notes | Images |
| Archaelagonops propinquus | Sp. nov | Valid | Wunderlich | Cenomanian | Burmese amber | Myanmar | A member of Araneomorphae belonging to the family Lagonomegopidae, a species of Archaelagonops. | |
| Archaelagonops scorsum | Sp. nov | Valid | Wunderlich | Cenomanian | Burmese amber | Myanmar | A member of Araneomorphae belonging to the family Lagonomegopidae, a species of Archaelagonops. | |
| Archaeoscorpiops | Gen. et sp. nov | Valid | Lourenço | Cretaceous | Burmese amber | Myanmar | A scorpion belonging to the superfamily Chactoidea and the family Palaeoeuscorpiidae. The type species is Archaeoscorpiops cretacicus. | |
| Autotomiana | Gen. et sp. nov | Valid | Wunderlich | Cenomanian | Burmese amber | Myanmar | A member of Araneomorphae belonging to the family Praeterleptonetidae or Pholcochyroceridae. The type species is Autotomiana hirsutipes. | |
| Betaburmesebuthus | Gen. et 3 sp. nov | Valid | Lourenço & Beigel | Cenomanian | Burmese amber | Myanmar | A scorpion belonging to the superfamily Buthoidea and the family Palaeoburmesebuthidae. The type species is Betaburmesebuthus kobberti Lourenço & Beigel (2015); genus also includes B. bidentatus Lourenço (2015) and B. muelleri Lourenço (2015). | |
| Biapophyses | Gen. et sp. nov | Valid | Wunderlich | Cenomanian | Burmese amber | Myanmar | A member of Araneomorphae belonging to the family Praeterleptonetidae. The type species is Biapophyses beate. | |
| Bicalamistrum | Gen. et sp. nov | Valid | Wunderlich | Cenomanian | Burmese amber | Myanmar | A member of Uloboridae. The type species is Bicalamistrum mixtum. | |
| Bicornoculus | Gen. et sp. nov | Valid | Wunderlich | Cenomanian | Burmese amber | Myanmar | A member of Tetrablemmidae. The type species is Bicornoculus levis. | |
| Burmadictyna clava | Sp. nov | Valid | Wunderlich | Cenomanian | Burmese amber | Myanmar | A member of the family Salticoididae (related to the net-casting spiders and the cribellate orb weavers), a species of Burmadictyna. | |
| Burmadictyna excavata | Sp. nov | Valid | Wunderlich | Cenomanian | Burmese amber | Myanmar | A member of the family Salticoididae (related to the net-casting spiders and the cribellate orb weavers), a species of Burmadictyna. | |
| Burmathelyphonia | Gen. et sp. nov | Valid | Wunderlich | Cenomanian | Burmese amber | Myanmar | A whip scorpion of uncr. The type species is Burmathelyphonia prima. | |
| Burmesiola daviesi | Sp. nov | Valid | Wunderlich | Cenomanian | Burmese amber | Myanmar | A tree trunk spider, a species of Burmesiola. | |
| Burmorsolus | Gen. et 2 sp. nov | Valid | Wunderlich | Cenomanian | Burmese amber | Myanmar | Probably a relative of trogloraptorids. The type species is Burmorsolus nonplumosus; genus also includes Burmorsolus crassus (this species was subsequently transferred to the genus Pseudorsolus, but later it was transferred back to the genus Burmorsolus). | |
| Burmuloborus antefixus | Sp. nov | Valid | Wunderlich | Cenomanian | Burmese amber | Myanmar | A member of Uloboridae, a species of Burmuloborus. | |
| ?Burmuloborus prolongatus | Sp. nov | Valid | Wunderlich | Cenomanian | Burmese amber | Myanmar | A member of Uloboridae, possibly a species of Burmuloborus. | |
| Chaerilobuthus birmanicus | Sp. nov | Valid | Lourenço | Cenomanian | Burmese amber | Myanmar | A chaerilobuthid scorpion. | |
| Chaerilobuthus bruckschi | Sp. nov | Valid | Lourenço | Cenomanian | Burmese amber | Myanmar | A chaerilobuthid scorpion. | |
| Chaerilobuthus enigmaticus | Sp. nov | Valid | Lourenço | Cenomanian | Burmese amber | Myanmar | A chaerilobuthid scorpion. | |
| Chaerilobuthus schwarzi | Sp. nov | Valid | Lourenço in Lourenço & Velten | Cenomanian | Burmese amber | Myanmar | A chaerilobuthid scorpion. | |
| Crassitibia | Gen. et 2 sp. nov | Valid | Wunderlich | Cenomanian | Burmese amber | Myanmar | A member of Araneomorphae; originally assigned to the family Praeterleptonetidae, subsequently transferred to the araneoid family Zarqaraneidae. The type species is Crassitibia longispina; genus also contains Crassitibia tenuimana. | |
| Cretaceothele | Gen. et sp. nov | Valid | Wunderlich | Cenomanian | Burmese amber | Myanmar | A member of Mesothelae. Originally assigned to the family Liphistiidae, but subsequently transferred to the separate family Cretaceothelidae. The type species is Cretaceothele lata. | |
| Cretotheridion | Gen. et sp. nov | Valid | Wunderlich | Cenomanian | Burmese amber | Myanmar | A member of Theridiidae. The type species is Cretotheridion inopinatum. | |
| Curvitibia | Gen. et sp. nov | Valid | Wunderlich | Cenomanian | Burmese amber | Myanmar | A member of Araneomorphae; originally assigned to the family Praeterleptonetidae, subsequently transferred to the araneoid family Zarqaraneidae. The type species is Curvitibia curima. | |
| Cushingia | Gen. et sp. nov | Valid | Dunlop et al. | Cenomanian | Burmese amber | Myanmar | A camel spider of uncertain phylogenetic placement. The type species is Cushingia ellenbergeri. | |
| Cymbiolagonops | Gen. et sp. nov | Valid | Wunderlich | Cenomanian | Burmese amber | Myanmar | A member of Araneomorphae belonging to the family Lagonomegopidae. The type species is Cymbiolagonops cymbiocalcar. | |
| Denticulsegestria | Gen. et sp. nov | Junior synonym | Wunderlich | Cenomanian | Burmese amber | Myanmar | A tube-dwelling spider, a member of the stem group of Segestriidae or a stem dysderoid. The type species is Denticulsegestria rugosa. Wunderlich & Müller (2020) considered the genus Denticulsegestria to be a junior synonym of the genus Parvosegestria, though the authors maintained the species D. rugosa as a distinct species within the latter genus. | |
| Dissorhina nuda | Sp. nov | Valid | Miko | Pliocene | | Slovenia | An oribatid mite belonging to the family Oppiidae, a species of Dissorhina. | |
| Dissorhina paleokrasica | Sp. nov | Valid | Miko | Pliocene | | Slovenia | An oribatid mite belonging to the family Oppiidae, a species of Dissorhina. | |
| Edwa | Gen. et sp. nov | Valid | Raven, Jell & Knezour | Late Triassic (Norian) | Blackstone Formation | Australia | A masteriine diplurid mygalomorph spider. The type species is Edwa maryae. | |
| ?Eogamasomorpha clara | Sp. nov | Valid | Wunderlich | Cenomanian | Burmese amber | Myanmar | A member of Tetrablemmidae, possibly a species of Eogamasomorpha. | |
| Eopsiloderces serenitas | Sp. nov | Valid | Wunderlich | Cenomanian | Burmese amber | Myanmar | A member of Araneomorphae belonging to the family Eopsilodercidae, a species of Eopsiloderces. | |
| Eramoscorpius | Gen. et sp. nov | Valid | Waddington, Rudkin & Dunlop | Silurian | Eramosa Formation | Canada | An aquatic scorpion. The type species is Eramoscorpius brucensis. | |
| Eunicolina glaesi | Sp. nov | Valid | Bertrand, Sidorchuk & Hoffeins | Eocene | | Europe (Baltic Sea coast) | A mite belonging to the family Labidostommatidae found in Baltic amber, a species of Eunicolina. | |
| Fessonia grabenhorsti | Sp. nov | Valid | Bartel et al. | Eocene to Oligocene | | Europe | A mite belonging to the family Smarididae found in Baltic amber (Europe, Baltic Sea coast) and Bitterfeld amber (Germany), a species of Fessonia. | |
| Fessonia groehni | Sp. nov | Valid | Bartel et al. | Eocene | | Europe (Baltic Sea coast) | A mite belonging to the family Smarididae found in Baltic amber, a species of Fessonia. | |
| Fessonia wunderlichi | Sp. nov | Valid | Bartel et al. | Eocene to Oligocene | | Europe | A mite belonging to the family Smarididae found in Baltic amber (Europe, Baltic Sea coast) and Bitterfeld amber (Germany), a species of Fessonia. | |
| Fossilcalcar | Gen. et sp. nov | Valid | Wunderlich | Cenomanian | Burmese amber | Myanmar | A member of Mygalomorphae. The type species is Fossilcalcar praeteritus. | |
| Groehnianus | Gen. et sp. nov | Valid | Wunderlich | Cenomanian | Burmese amber | Myanmar | A member of Araneomorphae; originally assigned to the family Praeterleptonetidae, subsequently transferred to the araneoid family Zarqaraneidae. The type species is Groehnianus burmensis. | |
| Hypotheridiosoma falcata | Sp. nov | Valid | Wunderlich | Cenomanian | Burmese amber | Myanmar | A member of Araneomorphae. Initially considered to be a member of the family Praeterleptonetidae and a species of Hypotheridiosoma; subsequently transferred to the araneoid family Zarqaraneidae and to the genus Spinicymbium. | |
| Jordansegestria | Gen. et sp. nov | Valid | Wunderlich | Cretaceous | | Jordan | A tube-dwelling spider, a member of the stem group of Segestriidae or a stem dysderoid. The type species is Jordansegestria detruneo. | |
| Jordariadna | Gen. et comb. nov | Valid | Wunderlich | Cretaceous | | Jordan | A tube-dwelling spider, a member of the stem group of Segestriidae or a stem dysderoid; a new genus for "Ariadna" amissiocoli Wunderlich (2008). | |
| Kronocharon engeli | Sp. nov | Valid | Wunderlich | Cenomanian | Burmese amber | Myanmar | A whip spider (originally assigned to Neoamblypygi, but excluded from this group by Garwood et al., 2017), a species of Kronocharon. | |
| Kronocharon longicalcaris | Sp. nov | Valid | Wunderlich | Cenomanian | Burmese amber | Myanmar | A whip spider (originally assigned to Neoamblypygi, but excluded from this group by Garwood et al., 2017), a species of Kronocharon. | |
| Lacinius bizleyi | Sp. nov | Valid | Mitov, Dunlop & Penney | Paleogene (Eocene-Oligocene?) | | Germany  Russia (Kaliningrad Oblast) | A member of Opiliones found in Baltic amber and Bitterfeld amber, a species of Lacinius. | |
| Lacunauchenius longissipes | Sp. nov | Valid | Wunderlich | Cenomanian | Burmese amber | Myanmar | A member of Archaeidae. Originally described as a species of Lacunauchenius, but subsequently transferred to the genus Eomysmauchenius. | |
| Lacunauchenius pilosus | Sp. nov | Valid | Wunderlich | Cenomanian | Burmese amber | Myanmar | A member of Archaeidae. Originally described as a species of Lacunauchenius, but subsequently transferred to the genus Planarchaea. | |
| ?Lagonomegops tuber | Sp. nov | Valid | Wunderlich | Cenomanian | Burmese amber | Myanmar | A member of Araneomorphae belonging to the family Lagonomegopidae, possibly a species of Lagonomegops. | |
| Leclercera ellenbergeri | Sp. nov | Valid | Wunderlich | Cenomanian | Burmese amber | Myanmar | A member of Psilodercidae. Originally described as a species of Leclercera, but subsequently transferred to the genus Priscaleclercera. | |
| Leclercera sexaculeata | Sp. nov | Valid | Wunderlich | Cenomanian | Burmese amber | Myanmar | A member of Psilodercidae. Originally described as a species of Leclercera, but subsequently transferred to the genus Priscaleclercera. | |
| Lineaburmops | Gen. et 2 sp. nov | Valid | Wunderlich | Cenomanian | Burmese amber | Myanmar | A member of Araneomorphae belonging to the family Lagonomegopidae. The type species is Lineaburmops beigeli; genus also contains Lineaburmops hirsutipes. | |
| Longissipalpus | Gen. et 3 sp. nov | Valid | Wunderlich | Cenomanian | Burmese amber | Myanmar | A relative of Mongolarachne. The type species is Longissipalpus minor; genus also contains Longissipalpus magnus and Longissipalpus maior. | |
| Microuloborus | Gen. et sp. nov | Valid | Wunderlich | Cenomanian | Burmese amber | Myanmar | A member of Uloboridae. The type species is Microuloborus birmanicus. | |
| Myansegestria | Gen. et 2 sp. nov | Valid | Wunderlich | Cenomanian | Burmese amber | Myanmar | A tube-dwelling spider, a member of the stem group of Segestriidae or a stem dysderoid. The type species is Myansegestria engin; genus also contains Myansegestria caederens. | |
| Nasutiacarus | Gen. et sp. nov | Valid | Sidorchuk & Lindquist in Sidorchuk, Perrichot & Lindquist | Late Cretaceous (middle Cenomanian to early Santonian) | | France | A mite belonging to the group Heterostigmata. The type species is Nasutiacarus perplexus. | |
| Nephila burmanica | Comb nov. | valid | (Poinar) | Early Cretaceous | Burmese amber | Myanmar | A nephiline. a new combination for "Geratonephila" burmanica | Nephila burmanica |
| Palaeoburmesebuthus ohlhoffi | Sp. nov | Valid | Lourenço | Cenomanian | Burmese amber | Myanmar | A palaeoburmesebuthid scorpion. | |
| Paramiagrammopes longiclypeus | Sp. nov | Valid | Wunderlich | Cenomanian | Burmese amber | Myanmar | A member of Uloboridae, a species of Paramiagrammopes. | |
| Paramiagrammopes patellidens | Sp. nov | Valid | Wunderlich | Cenomanian | Burmese amber | Myanmar | A member of Uloboridae, a species of Paramiagrammopes. | |
| Parviburmops | Gen. et sp. nov | Valid | Wunderlich | Cenomanian | Burmese amber | Myanmar | A member of Araneomorphae belonging to the family Lagonomegopidae. The type species is Parviburmops brevipalpus. | |
| Parvispina | Gen. et comb. nov | Valid | Wunderlich | Cenomanian | Burmese amber | Myanmar | A member of Araneomorphae; originally assigned to the family Praeterleptonetidae, subsequently transferred to the araneoid family Zarqaraneidae. A new genus for "Praeterleptoneta" tibialis Wunderlich (2011). | |
| Parvosegestria | Gen. et 4 sp. nov | Valid | Wunderlich | Cenomanian | Burmese amber | Myanmar | A tube-dwelling spider, a member of the stem group of Segestriidae or a stem dysderoid. The type species is Parvosegestria obscura; genus also contains Parvosegestria longitibialis, Parvosegestria pintgu and Parvosegestria triplex. | |
| Paxillomegops | Gen. et 2 sp. nov | Valid | Wunderlich | Cenomanian | Burmese amber | Myanmar | A member of Araneomorphae belonging to the family Lagonomegopidae. The type species is Paxillomegops longipes; genus might also contain a second species ?Paxillomegops brevipes. | |
| Pedipalparaneus | Gen. et sp. nov | Valid | Wunderlich | Cenomanian | Burmese amber | Myanmar | A relative of Mongolarachne. The type species is Pedipalparaneus seldeni. | |
| Phyxioschemoides | Gen. et sp. nov | Valid | Wunderlich | Cenomanian | Burmese amber | Myanmar | A spider of uncertain affinities, originally described as a member of Dipluridae. The type species is Phyxioschemoides collembola. | |
| Picturmegops | Gen. et sp. nov | Valid | Wunderlich | Cenomanian | Burmese amber | Myanmar | A member of Araneomorphae belonging to the family Lagonomegopidae. The type species is Picturmegops signatus. | |
| Planarchaea | Gen. et sp. nov | Valid | Wunderlich | Cenomanian | Burmese amber | Myanmar | A member of Archaeidae. The type species is Planarchaea kopp. | |
| Praeterpaculla | Gen. et 5 sp. nov | Valid | Wunderlich | Cenomanian | Burmese amber | Myanmar | A member of Tetrablemmidae. The type species is Praeterpaculla tuberosa; genus also contains Praeterpaculla armatura, Praeterpaculla biacuta, Praeterpaculla dissolata and Praeterpaculla equester. | |
| Primoricinuleus | Gen. et sp. nov | Valid | Wunderlich | Cenomanian | Burmese amber | Myanmar | A member of Ricinulei. The type species is Primoricinuleus pugio. | |
| Propterpsiloderces | Gen. et sp. nov | Valid | Wunderlich | Cenomanian | Burmese amber | Myanmar | A spider belonging to the family Eopsilodercidae. The type species is Propterpsiloderces longisetae. | |
| Retrooecobius | Gen. et 2 sp. nov | Valid | Wunderlich | Cenomanian | Burmese amber | Myanmar | A member of Oecobiidae. The type species is Retrooecobius chomskyi; genus also contains Retrooecobius convexus. | |
| Seldischnoplura | Gen. et sp. nov | Valid | Raven, Jell & Knezour | Early Cretaceous | Crato Formation | Brazil | A spider of uncertain affinities, originally described as a euagrine diplurid mygalomorph spider. The type species is Seldischnoplura seldeni. | |
| Spatiator putescens | Sp. nov | Valid | Wunderlich | Cenomanian | Burmese amber | Myanmar | A member of Araneomorphae belonging to the family Spatiatoridae, a species of Spatiator. | |
| Spinasilia | Gen. et sp. nov | Valid | Wunderlich | Cenomanian | Burmese amber | Myanmar | A tree trunk spider. The type species is Spinasilia dissoluta. | |
| Spinicreber | Gen. et sp. nov | Valid | Wunderlich | Cenomanian | Burmese amber | Myanmar | A member of Araneomorphae belonging to the family Pholcochyroceridae. The type species is Spinicreber antiquus. | |
| Spinipalpitibia | Gen. et sp. nov | Valid | Wunderlich | Cenomanian | Burmese amber | Myanmar | Originally described as a member of Araneomorphae belonging to the family Praeterleptonetidae; subsequently transferred to the leptonetoid family Protoaraneoididae. The type species is Spinipalpitibia maior. | |
| Spinipalpus | Gen. et sp. nov | Valid | Wunderlich | Cenomanian | Burmese amber | Myanmar | A member of Araneomorphae belonging to the family Pholcochyroceridae. The type species is Spinipalpus vetus. | |
| Sucinlourencous | Gen. et sp. nov | Valid | Rossi | Cenomanian | Burmese amber | Myanmar | A scorpion belonging to the superfamily Buthoidea and the family Sucinlourencoidae. The type species is Sucinlourencous adrianae. | |
| Syphax secedens | Sp. nov | Valid | Wunderlich | Eocene | | Europe | A crab spider found in Baltic amber, a species of Syphax. | |
| Tityus apozonalli | Sp. nov | Valid | Riquelme, Villegas & González in Riquelme et al. | Early-Middle Miocene | Mexican amber | Mexico | A Buthidae scorpion | Tityus apozonalli |
| Uniscutosoma | Gen. et sp. nov | Valid | Wunderlich | Cenomanian | Burmese amber | Myanmar | A member of Tetrablemmidae. The type species is Uniscutosoma aberrans. | |
| Vetiator | Gen. et sp. nov | Valid | Wunderlich | Cenomanian | Burmese amber | Myanmar | A member of Araneomorphae. Originally assigned to the family Spatiatoridae, but subsequently transferred to the separate family Vetiatoridae. The type species is Vetiator gracilipes. | |
| Zamilia aculeopectens | Sp. nov | Valid | Wunderlich | Cenomanian | Burmese amber | Myanmar | A member of Oecobiidae, a species of Zamilia. | |
| Zamilia quattuormammillae | Sp. nov | Valid | Wunderlich | Cenomanian | Burmese amber | Myanmar | A member of Oecobiidae, a species of Zamilia. | |
| Zhizhu | Gen. et 2 sp. nov | Valid | Selden, Ren & Shih | Middle Jurassic to Early Cretaceous | Jiulongshan Formation Yixian Formation | China | A cribellate spider related to net-casting spiders and cribellate orb weavers. Genus contains two species: Zhizhu daohugouensis and Zhizhu jeholensis. | |

## Newly named crustaceans
### Malacostracans

| Name | Novelty | Status | Authorship of new name | Age | Unit | Location | Notes |
| Blaculla haugi | Sp. nov | Valid | Winkler | Late Jurassic (early Tithonian) | Eichstätt Formation | Germany | A caridean shrimp, possibly a member of the superfamily Alpheoidea; a species of Blaculla. |
| Braggicarpilius | Gen. et sp. nov | Valid | Beschin, Busulini & Tessier | Eocene (Ypresian) | | Italy | A crab belonging to the family Carpiliidae. The type species is B. marginatus. |
| Caloxanthus britannicus | Sp. nov | Valid | Collins | Late Cretaceous (Cenomanian) | | France  United Kingdom | A feldmanniid crab, a relative of etyiids; a species of Caloxanthus. |
| Caloxanthus thompsonorum | Sp. nov | Valid | Klompmaker, Hyžný & Jakobsen | Late Cretaceous (Santonian) | | Austria | A crab, a species of Caloxanthus. |
| Caloxanthus vignyensis | Sp. nov | Valid | Klompmaker, Hyžný & Jakobsen | Paleocene (Danian) | | France | A crab, a species of Caloxanthus. |
| Capsulapagurus brocheti | Sp. nov | Valid | Fraaije, van Bakel & Jagt | Early Cretaceous (early Albian) | | France | A hermit crab belonging to the family Paguridae, a species of Capsulapagurus. |
| Cenomanocarcinus boedekeri | Sp. nov | Valid | Ossó, Jackson & Vega | Late Cretaceous (middle Cenomanian) | Woodbine Formation | United States | A palaeocorystoid crab, a species of Cenomanocarcinus. |
| Cenomanocarcinus cookseyi | Sp. nov | Valid | Ossó, Jackson & Vega | Early Cretaceous (Albian) | Walnut Formation | United States | A palaeocorystoid crab, a species of Cenomanocarcinus. |
| Chlorodiella elenae | Sp. nov | Valid | De Angeli & Alberti | Eocene (Lutetian) | | Italy | A crab belonging to the family Xanthidae, a species of Chlorodiella. |
| Corallicarpilius | Gen. et sp. nov | Valid | De Angeli & Ceccon | Early Eocene | | Italy | A crab belonging to the family Carpiliidae. The type species is C. arcuatus. |
| Corallomursia pauciornata | Sp. nov | Valid | Beschin, Busulini & Tessier | Eocene (Ypresian) | | Italy | A crab belonging to the family Calappidae. |
| Daira vestenanovensis | Sp. nov | Valid | Beschin, Busulini & Tessier | Eocene (Ypresian) | | Italy | A crab belonging to the family Dairidae. |
| Dardanus braggensis | Sp. nov | Valid | Beschin, Busulini & Tessier | Eocene (Ypresian) | | Italy | A species of Dardanus. |
| Diaulax rosablanca | Sp. nov | Valid | Gómez-Cruz, Bermúdez & Vega | Early Cretaceous (early Valanginian) | Rosablanca Formation | Colombia | A dromioid crab, a species of Diaulax. Announced in 2015; validated in 2023. |
| Eodromites guenteri | Sp. nov | Disputed | Starzyk | Late Jurassic (late Kimmeridgian) | | Germany | A crab belonging to the superfamily Homolodromioidea and the family Goniodromitidae; a species of Eodromites. Klompmaker et al. (2020) considered this species to be a junior synonym of Eodromites grandis (von Meyer, 1857). |
| Eodromites hyznyi | Sp. nov | Valid | Starzyk | Late Jurassic (Oxfordian) | | Poland | A crab belonging to the superfamily Homolodromioidea and the family Goniodromitidae; a species of Eodromites. |
| Eodromites rotundus | Sp. nov | Valid | Starzyk | Late Jurassic (Oxfordian) | | Poland | A crab belonging to the superfamily Homolodromioidea and the family Goniodromitidae; a species of Eodromites. |
| Erymastacus lagardettei | Sp. nov | Valid | Hyžný et al. | Middle Jurassic (Aalenian) | | France | A member of Erymidae, a species of Erymastacus. |
| Gastrodorus bzowiensis | Sp. nov | Valid | Krzemińska et al. | Late Jurassic | | Poland | A gastrodorid hermit crab, a species of Gastrodorus. |
| Gigantosculda | Gen. et sp. nov | Valid | Haug, Wiethase & Haug | Late Jurassic (Tithonian) | Solnhofen limestone (Altmühltal Group, Eichstätt Subformation) | Germany | A mantis shrimp. The type species is Gigantosculda ehrlichfeckei. |
| Glypturus panamacanalensis | Sp. nov | Valid | Klompmaker et al. | Pleistocene to Holocene | Bermont Formation Jaimanitas Formation | Cuba  Panama  United States | A member of Callianassidae, a species of Glypturus. |
| Glypturus sikesi | Sp. nov | Valid | Klompmaker et al. | Late Miocene | Choctawhatchee Formation | United States | A member of Callianassidae, a species of Glypturus. |
| Graptocarcinus moosleitneri | Sp. nov | Valid | Hyžný & Kroh | Early Cretaceous (Barremian) | | France | A dynomenid dromioid crab, a species of Graptocarcinus. |
| Jabaloya polonica | Sp. nov | Valid | Feldmann, Schweitzer & Błażejowski | Late Jurassic (late Tithonian) | | Poland | A member of Mecochiridae, a species of Jabaloya. |
| Latuxanthides | Gen. et sp. nov | Valid | De Angeli & Ceccon | Early Eocene | | Italy | A crab belonging to the family Palaeoxanthopsidae. The type species is L. dentatus. |
| Lessinithalamita | Gen. et sp. nov | Valid | De Angeli & Ceccon | Early Eocene | | Italy | A crab belonging to the family Portunidae. The type species is L. gioiae. |
| Mesolambrus ypresianus | Sp. nov | Valid | Beschin, Busulini & Tessier | Eocene (Ypresian) | | Italy | A crab belonging to the family Parthenopidae. |
| Metadynomene veronensis | Sp. nov | Valid | Beschin, Busulini & Tessier | Eocene (Ypresian) | | Italy | A crab belonging to the family Dynomenidae. |
| Mithrax arawakum | Sp. nov | Valid | Klompmaker et al. | Early Miocene | Montpelier Formation | Jamaica | A spider crab, a species of Mithrax. |
| Montemagrechirus | Gen. et sp. nov | Valid | De Angeli & Ceccon | Early Eocene | | Italy | A crab. Originally described as a species of Cryptochiridae; Klompmaker, Portell & van der Meij (2016) transferred it to the separate family Montemagrechiridae. The type species is M. tethysianus. |
| Munida branti | Sp. nov | Valid | Nyborg & Garassino | Miocene | Astoria Formation | United States | A member of Munididae, a species of Munida. |
| Munida grossetana | Sp. nov | Valid | Garassino & Pasini | Pliocene | | Italy | A member of Munididae, a species of Munida. |
| Munida prolata | Sp. nov | Valid | Feldmann, Schweitzer & Boessenecker | Pliocene | Purisima Formation | United States | A member of Munididae, a species of Munida. |
| Munida witteae | Sp. nov | Valid | Nyborg & Garassino | Oligocene | Makah Formation | United States | A member of Munididae, a species of Munida. |
| Munidopsis canadensis | Sp. nov | Valid | Nyborg et al. | Eocene | | Canada | A squat lobster, a species of Munidopsis. |
| Myanmariscus | Gen. et sp. nov | Valid | Broly, Maillet & Ross | Cretaceous | | Myanmar | A woodlouse. The type species is Myanmariscus deboiseae. |
| Nemausa windsorae | Sp. nov | Valid | Klompmaker et al. | Early Miocene | Montpelier Formation | Jamaica | A spider crab, a species of Nemausa. |
| Neoliomera minuta | Sp. nov | Valid | Beschin, Busulini & Tessier | Eocene (Ypresian) | | Italy | A crab belonging to the family Xanthidae, a species of Neoliomera. |
| Neptocarcinus dezanchei | Sp. nov | Valid | Beschin, Busulini & Tessier | Eocene (Ypresian) | | Italy | A crab belonging to the family Portunidae. |
| Paguristes liwinskii | Sp. nov | Valid | Fraaije et al. | Early Cretaceous (late Albian) | | Poland | A diogenid hermit crab, a species of Paguristes. |
| Paradistefania | Gen. et sp. nov | Valid | Beschin, Busulini & Tessier | Eocene (Ypresian) | | Italy | A crab belonging to the superfamily Homolodromioidea and the family Goniodromitidae. The type species is P. piccolii. |
| ?Paranecrocarcinus schloegli | Sp. nov | Valid | Hyžný & Kroh | Early Cretaceous (Barremian) | | France | A necrocarcinid crab, possibly a species of Paranecrocarcinus. |
| Peedeehomola | Gen. et sp. nov | Valid | Garassino, Clements & Vega | Late Cretaceous (late Maastrichtian) | Peedee Formation | United States | A member of Homolidae. The type species is P. deanbogani. |
| Pleovideolana | Gen. et sp. nov | Valid | Gašparič et al. | Middle Jurassic | | France | A cirolanid isopod. The type species is Pleovideolana gijsberti. |
| Portunus (Portunus) pankowskiorum | Sp. nov | Valid | Schweitzer & Feldmann | Middle-late Miocene | Monterey Formation | United States | A portunid crab, a species of Portunus. |
| Prealpicarcinus | Gen. et sp. nov | Disputed | De Angeli & Ceccon | Early Eocene | | Italy | A crab belonging to the family Pilumnidae. The type species is P. dallagoi. Beschin et al. (2018) considered P. dallagoi to be junior synonym of "Titanocarcinus" kochi Lőrenthey (1898), creating a new combination Prealpicarcinus kochi. |
| Ptychocaris sheldoni | Sp. nov | Valid | Mazurek, Dec & Łukowiak | Early Devonian | | Poland | An echinocaridid phyllocaridan, a species of Ptychocaris. |
| Schramocaris | Gen. et sp. nov | Valid | Clark et al. | Early Carboniferous | | United Kingdom | A eumalacostracan crustacean similar to Tealliocaris and Pseudogalathea. The type species is Schramocaris gilljonesorum. |
| Sosiocaris | Gen. et sp. nov | Valid | Jones et al. | Permian | Lercara Formation | Italy | A member of Peracarida belonging to the group Pygocephalomorpha. |
| Squilla erini | Sp. nov | Valid | Haug et al. | Late Oligocene to early Miocene | Nye Mudstone | United States | A mantis shrimp, a species of Squilla. |
| Tanidromites alexandrae | Sp. nov | Valid | Starzyk | Late Jurassic (Oxfordian) | | Poland | A tanidromitid crab, a relative of homolodromiids; a species of Tanidromites. |
| Tanidromites raboeufi | Sp. nov | Valid | Robin et al. | Middle Jurassic (late Bathonian) | | France | A tanidromitid crab, a relative of homolodromiids; a species of Tanidromites. |
| Vestenanovia | Gen. et sp. nov | Disputed | Beschin, Busulini & Tessier | Eocene (Ypresian) | | Italy | A crab belonging to the family Macropipidae. The type species is V. carinata. De Angeli, Garassino & Ceccon (2020) considered this species to be a junior synonym of Caprocancer altus Müller & Collins (1991). |
| Vicetiulita | Gen. et sp. nov | Valid | De Angeli & Ceccon | Early Eocene | | Italy | A crab belonging to the family Inachoididae. The type species is V. granulata. |

### Ostracods

| Name | Novelty | Status | Authorship of new name | Age | Unit | Location | Notes |
| Abyssocythere scotti | Sp. nov | Valid | Yasuhara et al. | Late Cretaceous (late Campanian and Maastrichtian) to Miocene | | Southwestern Atlantic Ocean | A member of Trachyleberididae, a species of Abyssocythere. |
| Acratia? pervagata | Sp. nov | Valid | Forel in Forel et al. | Permian-Triassic boundary | | Iran | An ostracod, possibly a species of Acratia. |
| Agrenocythere ciampoi | Nom. nov | Valid | Kempf | Late Oligocene | | Italy | A member of Podocopida belonging to the family Trachyleberididae; a replacement name for Agrenocythere bensoni Ciampo (1981). |
| Aleisocythereis | Gen. et sp. nov | Valid | Ceolin & Whatley in Ceolin et al. | Late Cretaceous (Maastrichtian) | Neuquén Basin | Argentina | A member of the family Trachyleberididae. The type species is Aleisocythereis polikothonus. |
| Ameghinocythere archaios | Sp. nov | Valid | Ceolin & Whatley in Ceolin et al. | Paleocene (Danian) | Neuquén Basin | Argentina | A member of the superfamily Cytheroidea and the family Pectocytheridae; a species of Ameghinocythere |
| Apatoleberis | Gen. et comb. nov | Valid | Ceolin & Whatley in Ceolin et al. | Late Cretaceous (Maastrichtian) | Neuquén Basin | Argentina  South Africa? | A member of the family Trachyleberididae. A new genus for "Trachyleberis" noviprinceps Bertels (1975); genus also contains "Trachyleberis" princeps Bertels (1969) and possibly "Trachyleberis" schizospinosa Dingle (1981). |
| Argilloecia abnormalis | Sp. nov | Valid | Ceolin & Whatley in Ceolin et al. | Cretaceous-Paleocene boundary (Maastrichtian and Danian) | Neuquén Basin | Argentina | A member of the superfamily Cypridoidea and the family Pontocyprididae, a species of Argilloecia |
| Argilloecia concludus | Sp. nov | Valid | Ceolin & Whatley in Ceolin et al. | Late Cretaceous (Maastrichtian) | Neuquén Basin | Argentina | A member of the superfamily Cypridoidea and the family Pontocyprididae, a species of Argilloecia |
| Argilloecia hydrodynamicus | Sp. nov | Valid | Ceolin & Whatley in Ceolin et al. | Paleocene (Danian) | Neuquén Basin | Argentina | A member of the superfamily Cypridoidea and the family Pontocyprididae, a species of Argilloecia |
| Argilloecia labri | Sp. nov | Valid | Yasuhara & Okahashi | Late Quaternary | | North Atlantic Ocean (Rockall Plateau) | A pontocypridid podocopid ostracod, a species of Argilloecia. |
| Atlanticythere bensoni | Sp. nov | Valid | Yasuhara et al. | Late Cretaceous (Campanian– Maastrichtian) to early Eocene | | Southwestern Atlantic Ocean | A member of Trachyleberididae, a species of Atlanticythere. |
| Atlanticythere oculi | Sp. nov | Valid | Yasuhara et al. | Late Eocene | | Southeastern Atlantic Ocean | A member of Trachyleberididae, a species of Atlanticythere. |
| Aversovalva glochinos | Sp. nov | Valid | Ceolin & Whatley in Ceolin et al. | Cretaceous-Paleocene boundary (Maastrichtian and Danian) | Neuquén Basin | Argentina  Brazil | A member of the superfamily Cytheroidea and the family Cytheruridae; a species of Aversovalva |
| Bairdia biforis | Sp. nov | Valid | Mette, Honigstein & Crasquin | Middle Triassic (middle Anisian) | Reifling Formation | Austria | A bairdiid podocopid ostracod, a species of Bairdia. |
| Bairdia chaotianensis | Sp. nov | Valid | Zazzali in Zazzali et al. | Permian (middle Capitanian to early Wuchiapingian) | Maokou Formation Wujiaping Formation | China | A bairdiid podocopid ostracod, a species of Bairdia. |
| Bairdia schneebergiana | Sp. nov | Valid | Mette, Honigstein & Crasquin | Middle Triassic (middle Anisian) | Reifling Formation | Austria | A bairdiid podocopid ostracod, a species of Bairdia. |
| Bairdiacypris aequisymmetrica | Sp. nov | Valid | Mette, Honigstein & Crasquin | Middle Triassic (middle Anisian) | Reifling Formation | Austria | A bairdiid podocopid ostracod, a species of Bairdiacypris. |
| Basslerella superarella | Sp. nov | Valid | Crasquin in Forel et al. | Permian-Triassic boundary | | Iran | An ostracod, a species of Basslerella. |
| Bensonocosta | Gen. et sp. nov | Valid | Yasuhara et al. | Late Cretaceous (Santonian to Maastrichtian) to late Miocene | | Southwestern Atlantic Ocean Indian Ocean | A member of Trachyleberididae. The type species is Bensonocosta bensoni; genus also contains two additional, unnamed species. |
| Bensonodutoitella | Gen. et sp. nov | Valid | Yasuhara et al. | Late Cretaceous (late Campanian) to late Miocene | | Southwestern Atlantic Ocean | A member of Trachyleberididae. The type species is Bensonodutoitella bicornigeri from late Miocene; genus also contains second, unnamed species from Late Cretaceous. |
| Bicornucythere concentrica | Sp. nov | Valid | Yamaguchi et al. | Eocene (Priabonian) | Yaw Formation | Myanmar | An ostracod belonging to the family Trachyleberididae, a species of Bicornucythere. |
| Bythoceratina cheleutos | Sp. nov | Valid | Ceolin & Whatley in Ceolin et al. | Paleocene (Danian) | Neuquén Basin | Argentina | A member of the superfamily Cytheroidea and the family Bythocytheridae, a species of Bythoceratina |
| Bythoceratina nuda | Sp. nov | Valid | Yasuhara & Okahashi | Late Quaternary | | North Atlantic Ocean (Rockall Plateau) | A bythocytherid podocopid ostracod, a species of Bythoceratina. |
| Caspiocypris amiterni | Sp. nov | Valid | Spadi & Gliozzi in Spadi et al. | Pliocene-Pleistocene (Piacenzian–Gelasian) | L'Aquila Basin | Italy | An ostracod, a species of Caspiocypris. |
| Caspiocypris bosii | Sp. nov | Valid | Spadi & Gliozzi in Spadi et al. | Pliocene-Pleistocene (Piacenzian–Gelasian) | L'Aquila Basin | Italy | An ostracod, a species of Caspiocypris. |
| Caspiocypris nicandroi | Sp. nov | Valid | Spadi & Gliozzi in Spadi et al. | Pliocene-Pleistocene (Piacenzian–Gelasian) | L'Aquila Basin | Italy | An ostracod, a species of Caspiocypris. |
| Caspiocypris vestinae | Sp. nov | Valid | Spadi & Gliozzi in Spadi et al. | Pliocene-Pleistocene (Piacenzian–Gelasian) | L'Aquila Basin | Italy | An ostracod, a species of Caspiocypris. |
| Castillocythereis | Gen. et 2 sp. nov | Valid | Ceolin & Whatley in Ceolin et al. | Cretaceous-Paleocene boundary (Maastrichtian and Danian) | Neuquén Basin | Argentina | The type species is Castillocythereis multicastrum; genus also contains Castillocythereis albertoriccardii. |
| Cavellina nesenensis | Sp. nov | Valid | Crasquin in Forel et al. | Permian-Triassic boundary | | Iran | An ostracod, a species of Cavellina. |
| Croninocythereis tridentiferi | Sp. nov | Valid | Yasuhara et al. | Middle Eocene to early Miocene | | Southern Atlantic Ocean Northwestern Pacific Ocean | A member of Trachyleberididae, a species of Croninocythereis. |
| Cryptophyllus pius | Sp. nov | Valid | Truuver & Meidla | Ordovician (Hirnantian) | | Poland | A member of Beyrichiocopida belonging to the family Cryptophyllidae, a species of Cryptophyllus. |
| Cypria bikeratia | Sp. nov | Valid | Spadi & Gliozzi in Spadi et al. | Pliocene-Pleistocene (Piacenzian–Gelasian) | L'Aquila Basin | Italy | An ostracod, a species of Cypria. |
| Cythereis clibanarius | Sp. nov | Valid | Ceolin & Whatley in Ceolin et al. | Paleocene (Danian) | Neuquén Basin | Argentina | A member of the family Trachyleberididae, a species of Cythereis. |
| Cythereis dinglei | Sp. nov | Valid | Yasuhara et al. | Miocene | | Southwestern Atlantic Ocean | A member of Trachyleberididae, a species of Cythereis. |
| Cythereis fungina | Sp. nov | Valid | Yasuhara et al. | Early Oligocene to late Miocene | | Southwestern Pacific Ocean Southern Ocean | A member of Trachyleberididae, a species of Cythereis. |
| Cythereis guerneti | Sp. nov | Valid | Yasuhara et al. | Late Eocene and Oligocene | | Southwestern Atlantic Ocean | A member of Trachyleberididae, a species of Cythereis. |
| Cythereis johnnealei | Sp. nov | Valid | Yasuhara et al. | Early Oligocene | | Southern Ocean | A member of Trachyleberididae, a species of Cythereis. |
| Cythereis legitimoformis | Sp. nov | Valid | Yasuhara et al. | Quaternary | | North Pacific Ocean | A member of Trachyleberididae, a species of Cythereis. |
| Cythereis neoanteplana | Sp. nov | Valid | Yasuhara et al. | Miocene | | Southeastern Atlantic Ocean | A member of Trachyleberididae, a species of Cythereis. |
| Cythereis ovi | Sp. nov | Valid | Yasuhara et al. | Oligocene and early Miocene | | Southwestern Atlantic Ocean | A member of Trachyleberididae, a species of Cythereis. |
| Cythereis parajohnnealei | Sp. nov | Valid | Yasuhara et al. | Middle Eocene to early Oligocene | | Southern Ocean | A member of Trachyleberididae, a species of Cythereis. |
| Cythereis purii | Sp. nov | Valid | Yasuhara et al. | Early Miocene | | Indian Ocean | A member of Trachyleberididae, a species of Cythereis. |
| Cythereis richardbensoni | Sp. nov | Valid | Yasuhara et al. | Late Miocene and Pliocene | | Southwestern Atlantic Ocean | A member of Trachyleberididae, a species of Cythereis. |
| Cythereis stratios | Sp. nov | Valid | Ceolin & Whatley in Ceolin et al. | Cretaceous-Paleocene boundary (Maastrichtian and Danian) | Neuquén Basin | Argentina | A member of the family Trachyleberididae, a species of Cythereis. |
| Cythereis swansoni | Sp. nov | Valid | Yasuhara et al. | Miocene | | Southern Ocean | A member of Trachyleberididae, a species of Cythereis. |
| Cythereis sylvesterbradleyi | Sp. nov | Valid | Yasuhara et al. | Late Eocene to Miocene | | Indian Ocean | A member of Trachyleberididae, a species of Cythereis. |
| Cythereis tomcronini | Sp. nov | Valid | Yasuhara et al. | Oligocene and Miocene | | Southern Atlantic Ocean Northwestern Pacific Ocean | A member of Trachyleberididae, a species of Cythereis. |
| Cythereis trajectiones | Sp. nov | Valid | Ceolin & Whatley in Ceolin et al. | Cretaceous-Paleocene boundary (Maastrichtian and Danian) | Neuquén Basin | Argentina | A member of the family Trachyleberididae, a species of Cythereis. |
| Cytherella carmela | Sp. nov | Valid | Sciuto | Early Pleistocene | | Italy | A member of Cytherellidae, a species of Cytherella. |
| Cytherella pelotensis | Sp. nov | Valid | Manica, Bergue & Coimbra | Early Miocene | Pelotas Basin | South Atlantic Ocean (Brazilian margin) | A member of Cytherellidae, a species of Cytherella |
| Cytherella saraballentae | Sp. nov | Valid | Ceolin & Whatley in Ceolin et al. | Late Cretaceous to Cretaceous-Paleocene boundary (Maastrichtian and Danian) | Neuquén Basin | Argentina  Niger | A member of Cytherellidae, a species of Cytherella |
| Cytherella semicatillus | Sp. nov | Valid | Ceolin & Whatley in Ceolin et al. | Cretaceous-Paleocene boundary (Maastrichtian and Danian) | Neuquén Basin | Argentina | A member of Cytherellidae, a species of Cytherella |
| Cytheropteron bidentinos | Sp. nov | Valid | Ceolin & Whatley in Ceolin et al. | Paleocene (Danian) | Neuquén Basin | Argentina | A member of the superfamily Cytheroidea and the family Cytheruridae; a species of Cytheropteron |
| Cytheropteron colesoabyssorum | Sp. nov | Valid | Yasuhara & Okahashi | Late Quaternary | | North Atlantic Ocean (Rockall Plateau) | A cytherurid podocopid ostracod, a species of Cytheropteron. |
| Cytheropteron colesopunctatum | Sp. nov | Valid | Yasuhara & Okahashi | Late Quaternary | | North Atlantic Ocean (Rockall Plateau) | A cytherurid podocopid ostracod, a species of Cytheropteron. |
| Cytheropteron hyperdictyon | Sp. nov | Valid | Ceolin & Whatley in Ceolin et al. | Paleocene (Danian) | Neuquén Basin | Argentina  Brazil | A member of the superfamily Cytheroidea and the family Cytheruridae; a species of Cytheropteron |
| Cytheropteron paramediotumidum | Sp. nov | Valid | Yasuhara & Okahashi | Late Quaternary | | North Atlantic Ocean (Rockall Plateau) | A cytherurid podocopid ostracod, a species of Cytheropteron. |
| Cytheropteron translimitares | Sp. nov | Valid | Ceolin & Whatley in Ceolin et al. | Cretaceous-Paleocene boundary (Maastrichtian and Danian) | Neuquén Basin | Argentina | A member of the superfamily Cytheroidea and the family Cytheruridae; a species of Cytheropteron |
| Dutoitella atlantiformis | Sp. nov | Valid | Yasuhara et al. | Late Cretaceous (Santonian) | | Indian Ocean | A member of Trachyleberididae, a species of Dutoitella. |
| Dutoitella ayressi | Sp. nov | Valid | Yasuhara et al. | Miocene | | Southeastern Atlantic Ocean | A member of Trachyleberididae, a species of Dutoitella. |
| Dutoitella colesi | Sp. nov | Valid | Yasuhara et al. | Late Cretaceous (late Campanian) | | Southwestern Atlantic Ocean | A member of Trachyleberididae, a species of Dutoitella. |
| Dutoitella mazziniae | Sp. nov | Valid | Yasuhara et al. | Late Miocene and early Pliocene | | Southern Atlantic Ocean | A member of Trachyleberididae, a species of Dutoitella. |
| Dutoitella paradinglei | Sp. nov | Valid | Yasuhara et al. | Middle Miocene | | Southern Ocean | A member of Trachyleberididae, a species of Dutoitella. |
| Dutoitella spinosa | Sp. nov | Valid | Yasuhara et al. | Late Cretaceous (late Campanian) to late Miocene | | Southwestern Atlantic Ocean | A member of Trachyleberididae, a species of Dutoitella. |
| Dutoitella symmetrica | Sp. nov | Valid | Yasuhara et al. | Late Eocene | | Indian Ocean | A member of Trachyleberididae, a species of Dutoitella. |
| Dutoitella whatleyi | Sp. nov | Valid | Yasuhara et al. | Late Cretaceous (late Campanian) to middle Paleocene | | Southwestern Atlantic Ocean | A member of Trachyleberididae, a species of Dutoitella. |
| Eucythere dinetos | Sp. nov | Valid | Ceolin & Whatley in Ceolin et al. | Cretaceous-Paleocene boundary (Maastrichtian and Danian) | Neuquén Basin | Argentina | A member of the superfamily Cytheroidea and the family Cytherideidae; a species of Eucythere |
| Eucytherura stibaros | Sp. nov | Valid | Ceolin & Whatley in Ceolin et al. | Cretaceous-Paleocene boundary (Maastrichtian and Danian) | Neuquén Basin | Argentina  Brazil | A member of the superfamily Cytheroidea and the family Cytheruridae; a species of Eucytherura |
| Heinia prostratopleuricos | Sp. nov | Valid | Ceolin & Whatley in Ceolin et al. | Paleocene (Danian) | Neuquén Basin | Argentina | A member of the superfamily Cytheroidea and the family Loxoconchidae; a species of Heinia |
| Hemingwayella verrucosus | Sp. nov | Valid | Ceolin & Whatley in Ceolin et al. | Paleocene (Danian) | Neuquén Basin | Argentina | A member of the superfamily Cytheroidea and the family Cytheruridae; a species of Hemingwayella |
| Henryhowella (Wichmannella) praealtus | Sp. nov | Valid | Ceolin & Whatley in Ceolin et al. | Paleocene (Danian) | Neuquén Basin | Argentina | A member of the family Trachyleberididae, a species of Henryhowella. |
| Hysterocythereis | Gen. et 3 sp. et comb. nov | Valid | Ceolin & Whatley in Ceolin et al. | Cretaceous-Paleocene boundary (Maastrichtian and Danian) | Neuquén Basin | Argentina | A member of the family Trachyleberididae. The type species is Hysterocythereis paredros; genus also contains Hysterocythereis coinotes and Hysterocythereis diversotuberculatus, as well as "Anticythereis" inconnexa Bertels (1973) and "Anticythereis" attenuata Bertels (1975). |
| Ilyocypris ilae | Sp. nov | Valid | Spadi & Gliozzi in Spadi et al. | Pliocene-Pleistocene (Piacenzian–Gelasian) | L'Aquila Basin | Italy | An ostracod, a species of Ilyocypris. |
| Inversacytherella atlantica | Sp. nov | Valid | Manica, Bergue & Coimbra | Early Miocene | Pelotas Basin | South Atlantic Ocean (Brazilian margin) | A member of Cytherellidae, a species of Inversacytherella |
| Keijia circulodictyon | Sp. nov | Valid | Ceolin & Whatley in Ceolin et al. | Paleocene (Danian) | Neuquén Basin | Argentina | A member of the superfamily Cytheroidea and the family Pectocytheridae; a species of Keijia |
| Keijia kratistos | Sp. nov | Valid | Ceolin & Whatley in Ceolin et al. | Paleocene (Danian) | Neuquén Basin | Argentina | A member of the superfamily Cytheroidea and the family Pectocytheridae; a species of Keijia |
| Klieana? coimbraensis | Sp. nov | Valid | Cabral & Colin in Duarte et al. | Early Jurassic (Sinemurian) | Coimbra Formation | Portugal | |
| “Klinglerella” roselinae | Sp. nov | Valid | Cabral & Colin in Duarte et al. | Early Jurassic (Sinemurian) | Coimbra Formation | Portugal | |
| Krithe crepidus | Sp. nov | Valid | Ceolin & Whatley in Ceolin et al. | Cretaceous-Paleocene boundary (Maastrichtian and Danian) | Neuquén Basin | Argentina  Brazil | A member of the superfamily Cytheroidea and the family Cytherideidae; a species of Krithe |
| Kunluniacypris | Nom. nov | Valid | Kempf | Late Permian | Tarim Basin | China | A member of the family Cyprididae; a replacement name for Kunlunia Jiang & Lin (1995). |
| Leguminocythereis? buzasi | Sp. nov | Valid | Yasuhara et al. | Late Eocene | | Southeastern Atlantic Ocean | A member of Trachyleberididae, possibly a species of Leguminocythereis. |
| Limnocythere katu | Sp. nov | Valid | Bergue, Maranhão & Fauth | Oligocene | Tremembé Formation | Brazil | A member of the superfamily Cytheroidea and the family Limnocytheridae, a species of Limnocythere. |
| Limnocythere mandubi | Sp. nov | Valid | Bergue, Maranhão & Fauth | Oligocene | Tremembé Formation | Brazil | A member of the superfamily Cytheroidea and the family Limnocytheridae, a species of Limnocythere. |
| Looneyellopsis multiornata | Sp. nov | Valid | Carignano & Cusminsky | Late Cretaceous | | Argentina | A member of Limnocytheridae. |
| Loxoconcha (s.l.) posterocosta | Sp. nov | Valid | Ceolin & Whatley in Ceolin et al. | Paleocene (Danian) | Neuquén Basin | Argentina | A member of the superfamily Cytheroidea and the family Loxoconchidae of uncertain phylogenetic placement; a species of Loxoconcha (sensu lato). |
| Microcheilinella alborzella | Sp. nov | Valid | Forel in Forel et al. | Permian-Triassic boundary | | Iran | An ostracod, a species of Microcheilinella. |
| Microcheilinella istanbulensis | Sp. nov | Valid | Olempska & Nazik | Early Devonian | Pendik Formation | Turkey | An ostracod, a species of Microcheilinella. |
| Microcheilinella pagodaensis | Sp. nov | Valid | Zazzali in Zazzali et al. | Permian (middle Capitanian to early Wuchiapingian) | Maokou Formation Wujiaping Formation | China | A microcheilinellid podocopid ostracod, a species of Microcheilinella. |
| Microcheilinella wujiapingensis | Sp. nov | Valid | Zazzali in Zazzali et al. | Permian (early Wuchiapingian) | Wujiaping Formation | China | A microcheilinellid podocopid ostracod, a species of Microcheilinella. |
| Mimicocythereis | Gen. et comb. nov | Valid | Ceolin & Whatley in Ceolin et al. | Late Cretaceous (Maastrichtian) | Neuquén Basin | Argentina | A member of the family Trachyleberididae. A new genus for "Bradleya" attilai Bertels (1975); genus also contains "Bradleya" patagonica Bertels (1975). |
| Mirabairdia plurispinosa | Sp. nov | Valid | Mette, Honigstein & Crasquin | Middle Triassic (middle Anisian) | Reifling Formation | Austria | A bairdiid podocopid ostracod, a species of Mirabairdia. |
| Mirabairdia praepsychrosphaerica | Sp. nov | Valid | Mette, Honigstein & Crasquin | Middle Triassic (middle Anisian) | Reifling Formation | Austria | A bairdiid podocopid ostracod, a species of Mirabairdia. |
| Munseyella costaevermiculatus | Sp. nov | Valid | Ceolin & Whatley in Ceolin et al. | Late Cretaceous (Maastrichtian) | Neuquén Basin | Argentina | A member of the superfamily Cytheroidea and the family Pectocytheridae; a species of Munseyella |
| Oligocythereis sylvesterbradleyi | Sp. nov | Valid | Yasuhara et al. | Middle Eocene | | Indian Ocean | A member of Trachyleberididae, a species of Oligocythereis. |
| Omerliella | Gen. et sp. nov | Valid | Olempska & Nazik | Early Devonian | Pendik Formation | Turkey | An ostracod. The type species is Omerliella rectangulata. |
| Orthrocosta | Gen. et 3 sp. nov | Valid | Ceolin & Whatley in Ceolin et al. | Cretaceous-Paleocene boundary (Maastrichtian and Danian) | Neuquén Basin | Argentina | A member of the family Trachyleberididae. The type species is Orthrocosta decores; genus also contains Orthrocosta atopos and Orthrocosta phantasia. |
| Paracypris bertelsae | Sp. nov | Valid | Ceolin & Whatley in Ceolin et al. | Paleocene (Danian) | Neuquén Basin | Argentina | A cypridoid ostracod belonging to the family Paracyprididae, a species of Paracypris |
| Paracypris imaguncula | Sp. nov | Valid | Ceolin & Whatley in Ceolin et al. | Cretaceous-Paleocene boundary (Maastrichtian to Danian) | Neuquén Basin | Argentina | A cypridoid ostracod belonging to the family Paracyprididae, a species of Paracypris |
| Paralimnocythere aucamahuevoensis | Sp. nov | Valid | Carignano & Cusminsky | Late Cretaceous | | Argentina | A member of Limnocytheridae. |
| Paralimnocythere musacchioi | Sp. nov | Valid | Carignano & Cusminsky | Late Cretaceous | | Argentina | A member of Limnocytheridae. |
| Paramunseyella epaphroditus | Sp. nov | Valid | Ceolin & Whatley in Ceolin et al. | Late Cretaceous (Maastrichtian) | Neuquén Basin | Argentina | A member of the superfamily Cytheroidea and the family Pectocytheridae; a species of Paramunseyella |
| Pellucistoma curupira | Sp. nov | Valid | Gross, Ramos & Piller | Miocene | Solimões Formation | Brazil | A member of the family Cytheromatidae, a species of Pellucistoma. |
| Perissocytheridea tunisiatlasica | Sp. nov | Valid | Trabelsi et al. | Early Cretaceous (Aptian) | Kebar Formation | Tunisia | A species of Perissocytheridea. |
| Petalocythereis | Gen. et comb. nov | Valid | Ceolin & Whatley in Ceolin et al. | Cretaceous-Paleocene boundary (Maastrichtian and Danian) | Neuquén Basin | Argentina | A member of the family Trachyleberididae. A new genus for "Anticythereis" schilleri Bertels (1973); genus also contains "Anticythereis" venusta Bertels (1975). |
| Phacorhabdotus nudus | Sp. nov | Valid | Yasuhara et al. | Late Cretaceous (Campanian–Maastrichtian) | | Southwestern Atlantic Ocean | A member of Trachyleberididae, a species of Phacorhabdotus. |
| Phacorhabdotus slipperi | Sp. nov | Valid | Yasuhara et al. | Middle Paleocene | | Southeastern Atlantic Ocean | A member of Trachyleberididae, a species of Phacorhabdotus. |
| Phelocyprideis | Gen. et sp. nov | Valid | Ceolin & Whatley in Ceolin et al. | Paleocene (Danian) | Neuquén Basin | Argentina | A member of the superfamily Cytheroidea and the family Cytherideidae. The type species is Phelocyprideis acardomesido. |
| Phraterfabanella boomeri | Sp. nov | Valid | Cabral & Colin in Duarte et al. | Early Jurassic (Sinemurian) | Coimbra Formation | Portugal | |
| Polycope lunaris | Sp. nov | Valid | Yasuhara & Okahashi | Late Quaternary | | North Atlantic Ocean (Rockall Plateau) | A polycopid ostracod, a species of Polycope (sensu lato). |
| Procytherura erichbrandi | Nom. nov | Valid | Kempf | Middle Jurassic (Bathonian) | | Germany | A member of Podocopida belonging to the family Cytheruridae; a replacement name for Procytherura reticulata Brand (1990). |
| Reticulocosta edrianae | Sp. nov | Valid | Antonietto et al. | Early Cretaceous (Albian) | Riachuelo Formation | Brazil | A member of Podocopida belonging to the family Cytherettidae, a species of Reticulocosta |
| Roundyella goekchenae | Sp. nov | Valid | Olempska & Nazik | Early Devonian | Pendik Formation | Turkey | An ostracod, a species of Roundyella. |
| Ryugucivis | Gen. et sp. nov | Valid | Yasuhara et al. | Cretaceous (late Albian to Maastrichtian) to late Miocene | | Southwestern Atlantic Ocean Northwestern Pacific Ocean | A member of Trachyleberididae. The type species is Ryugucivis jablonskii; genus also contains Ryugucivis acuminata and Ryugucivis obtusa. |
| Shivaella elertensis | Sp. nov | Valid | Chitnarin | Permian | E-Lert Formation | Thailand | An ostracod, a species of Shivaella. |
| Sthenarocythereis | Gen. et comb. et sp. nov | Valid | Ceolin & Whatley in Ceolin et al. | Late Cretaceous (Maastrichtian) | Neuquén Basin | Argentina | A member of the family Trachyleberididae. A new genus for "Anticythereis" arcana Bertels (1975); genus also contains the new species Sthenarocythereis erymnos. |
| Tabukicypris | Gen. et sp. nov | Valid | Chiu et al. | Holocene | | Japan | The type species is Tabukicypris decoris. |
| Taracythere thalassoformis | Sp. nov | Valid | Yasuhara et al. | Oligocene | | Northwestern Pacific Ocean | A member of Trachyleberididae, a species of Taracythere. |
| Trachyleberis abkhaziana | Nom. nov | Valid | Kempf | Late Pliocene | | Abkhazia | A member of Podocopida belonging to the family Trachyleberididae; a replacement name for Trachyleberis quadrata Imnadze in Vekua (1975). |
| Uralinova | Nom. nov | Valid | Kempf | Devonian | | Russia | A member of Kloedenellocopida belonging to the family Gotlandellidae; a replacement name for Uralina Rozhdestvenskaya (1962). |
| Vanalabia | Nom. nov | Valid | Kempf | Late Silurian | | Czech Republic | A member of Kloedenellocopida, possibly belonging to the family Kloedenellitinidae; a replacement name for Vania Kruta & Siveter (1998). |
| Vecticypris punctata | Sp. nov | Valid | Carignano & Cusminsky | Late Cretaceous | | Argentina | A member of Limnocytheridae. |
| Wolburgiopsis ballentae | Sp. nov | Valid | Carignano & Cusminsky | Late Cretaceous | | Argentina | A member of Limnocytheridae. |

### Other crustaceans

| Name | Novelty | Status | Authorship of new name | Age | Unit | Location | Notes |
| Arcoscalpellum scaniensis | Sp. nov | Valid | Gale in Gale & Sørensen | Late Cretaceous (Campanian) | | Sweden | A scalpellid goose barnacle, a species of Arcoscalpellum. |
| Bosquetlepas | Gen. et comb. nov | Valid | Gale in Gale & Sørensen | Late Cretaceous | | Belgium  France  Netherlands  Sweden  Ukraine | A goose barnacle. A new genus for "Mitella" darwiniana Bosquet (1854). Genus also contains "Pollicipes" valida Steenstrup (1839), "Pollicipes" gracilis Roemer (1841), "Pollicipes" zeidleri Reuss (1864), "Calantica" (Scillaelepas) subplena Collins (1983) and "Calantica" (Scillaelepas) contigua Collins (1983). Genus might also contain "Calantica" (Scillaelepas) brydonei Withers (1935) and "Calantica" (Scillaelepas) turonica Withers (1935). |
| Capitulum sklenari | Sp. nov | Valid | Veselská et al. | Late Cretaceous (late Cenomanian–early Turonian) | Bohemian Cretaceous Basin | Czech Republic | A scalpelliform barnacle, a species of Capitulum. |
| Cratostracus? tunisiaensis | Sp. nov | Valid | Boukhalfa et al. | Early Cretaceous (Barremian) | Sidi Aïch Formation | Tunisia | A clam shrimp, possibly a species of Cratostracus. |
| Estheriellites zavattieriae | Sp. nov | Valid | Tassi, Zavattieri & Gallego | Middle Triassic | Cerro de Las Cabras Formation | Argentina | A clam shrimp, a species of Estheriellites. |
| Euestheria menendezi | Sp. nov | Valid | Tassi, Zavattieri & Gallego | Middle Triassic | Cerro de Las Cabras Formation | Argentina | A clam shrimp, a species of Euestheria. |
| Invavita | Gen. et sp. nov | Valid | Siveter et al. | Silurian (about 425 mya) | Herefordshire Lagerstätte | United Kingdom | A tongue worm, possibly a member of Cephalobaenida. The type species is Invavita piratica. |
| Ivoelepas | Gen. et sp. et comb. nov | Valid | Gale in Gale & Sørensen | Late Cretaceous | | France  Peru  Sweden | A goose barnacle. The type species is Ivoelepas nielseni. Genus also contains "Calantica" (Titanolepas) ambigua Babinot, Collins & Tronchetti (1979), "Zeugmatolepas" ischna Pilsbry & Olsson (1951), "Zeugmatolepas" broggii Pilsbry & Olsson (1951), "Zeugmatolepas" withersi Pilsbry & Olsson (1951) and "Zeugmatolepas" rectibasis Pilsbry & Olsson (1951). |
| Levelepas | Gen. et sp. nov | Valid | Gale in Gale & Sørensen | Late Cretaceous (Campanian) | | Sweden | A goose barnacle. The type species is Levelepas roeperi. |
| Leweslepas | Gen. et 3 sp. et comb. nov | Valid | Gale | Late Cretaceous (early Cenomanian to early Turonian) | | Germany  United Kingdom | A thoracican barnacle belonging to the family Stramentidae. The type species is Leweslepas hattini; genus also includes new species L. hauschkei and L. wrightorum, as well as "Pollicipes" acuminatus Darwin (1851) and "Scalpellum" obsoletum Geinitz (1875). |
| Loriculina ifrimae | Sp. nov | Valid | Gale | Late Cretaceous (Coniacian) | | Mexico | A thoracican barnacle belonging to the family Stramentidae, a species of Loriculina. |
| Loriolepas | Gen. et comb. nov | Valid | Gale | Late Jurassic and Early Cretaceous (Valanginian) | | France  Germany  United Kingdom | A thoracican barnacle related to members of the family Stramentidae. The type species is "Pollicipes" suprajurensis de Loriol in de Loriol & Pellat (1867); genus also includes "Archaeolepas" decora Harbort (1905) and "Pollicipes" planulatus Morris (1845). |
| Metaloriculina | Gen. et 2 sp. nov | Valid | Gale | Late Cretaceous (Coniacian to Campanian) | | Mexico  United Kingdom | A thoracican barnacle belonging to the family Stramentidae. The type species is Metaloriculina stramentioides; genus also includes Metaloriculina norvicensis. |
| Myolepas | Gen. et comb. nov | Valid | Gale in Gale & Sørensen | Late Cretaceous (Campanian to Maastrichtian) | | Sweden  United States | A goose barnacle. A new genus for "Calantica" (Scillaelepas) scanica Withers (1935); genus also contains Brachylepas solida Zullo (1987). |
| Parastramentum | Gen. et 3 sp. et comb. nov | Valid | Gale | Late Cretaceous (Turonian to Campanian) | | Canada  Germany  United Kingdom | A thoracican barnacle belonging to the family Stramentidae. The type species is Parastramentum peakei; genus also includes new species Parastramentum albertaensis and P. brydonei, as well as "Loricula" expansa Withers (1911). |
| Pollicipes (?) striatum | Sp. nov | Valid | Gale in Gale & Sørensen | Late Cretaceous (Campanian) | | Sweden | A pollicipedid goose barnacle, possibly a species of Pollicipes. |
| Pollicipes vansyoci | Sp. nov | Valid | Gale in Gale & Sørensen | Late Cretaceous (Campanian) | | Sweden | A pollicipedid goose barnacle, a species of Pollicipes. |
| Porobalanus | Gen. et comb. nov | Valid | Buckeridge | Early Pliocene | | Antarctica (Cockburn Island) | A barnacle; a new genus for "Notomegabalanus" hennigi Newman (1979). |
| Stramentum alekseevi | Sp. nov | Valid | Gale | Late Cretaceous (late Turonian) | | Kazakhstan | A thoracican barnacle belonging to the family Stramentidae, a species of Stramentum. |
| Stramentum praecursor | Sp. nov | Valid | Gale | Late Cretaceous (Cenomanian) | | France  United Kingdom | A thoracican barnacle belonging to the family Stramentidae, a species of Stramentum. |
| Strudops | Gen. et sp. nov | Valid | Lagebro et al. | Late Devonian | | Belgium | A notostracan. The type species is Strudops goldenbergi. |
| Titanolepas spinifer | Sp. nov | Valid | Gale in Gale & Sørensen | Late Cretaceous (Campanian) | | Sweden | A goose barnacle, a species of Titanolepas. |
| Titobustillobalanus | Gen. et sp. nov | Valid | Carriol in Carriol & Álvarez-Fernández | Late Pleistocene | | Spain | A balanid barnacle. The type species is Titobustillobalanus tubutubulus. |
| Toarcolepas | Gen. et sp. et comb. nov | Valid | Gale & Schweigert | Early Jurassic | | France  Germany  United Kingdom | An eolepadid barnacle. The type species is Toarcolepas mutans; genus also includes T. gaveyi (Withers, 1920) and T. lotharingica (Méchin, 1901). |
| Wannerestheria kozuri | Sp. nov | Valid | Weems & Lucas | Late Triassic (Norian) | Bull Run Formation | United States | A clam shrimp. |

## Trilobites

| Name | Novelty | Status | Authorship of new name | Age | Unit | Location | Notes |
| Acanthophillipsia felicitae | Sp. nov | Valid | Fortey & Heward | Permian (Kungurian–Roadian) | | Oman | A phillipsiid, a species of Acanthophillipsia. |
| Acadoparadoxides deani | Sp. nov | Valid | Geyer & Vincent | Cambrian | | Turkey | A paradoxidid, a species of Acadoparadoxides. |
| Acadoparadoxides levisettii | Sp. nov | Disputed | Geyer & Vincent | Cambrian | | Morocco | A paradoxidid, a species of Acadoparadoxides. Suggested to be a junior synonym of Acadoparadoxides mureroensis by Álvaro, Esteve & Zamora (2018), but this interpretation was rejected by Geyer et al. (2019). |
| Acadoparadoxides ovatopyge | Sp. nov | Disputed | Geyer & Vincent | Cambrian | | Morocco | A paradoxidid, a species of Acadoparadoxides. Suggested to be a junior synonym of Acadoparadoxides mureroensis by Álvaro, Esteve & Zamora (2018), but this interpretation was rejected by Geyer et al. (2019). |
| Acadoparadoxides pampalius | Sp. nov | Disputed | Geyer & Vincent | Cambrian | | Morocco | A paradoxidid, a species of Acadoparadoxides. Suggested to be a junior synonym of Acadoparadoxides mureroensis by Álvaro, Esteve & Zamora (2018), but this interpretation was rejected by Geyer et al. (2019). |
| Akoldinioidia latus | Sp. nov | Valid | Park & Kihm | Cambrian (Furongian) | Hwajeol Formation | South Korea | A member of the family Shumardiidae, a species of Akoldinioidia. |
| Alumenella | Gen. et comb. nov | Valid | Geyer & Corbacho | Cambrian | | Sweden | A burlingiid; a new genus for "Schmalenseeia" jagoi Whittington (1994). |
| Amphoton krusei | Sp. nov | Valid | Smith, Paterson & Brock | Cambrian (Templetonian) | Giles Creek Dolostone | Australia | A member of Dolichometopidae, a species of Amphoton. |
| Asaphellus isabelae | Sp. nov | Valid | Meroi Arcerito, Waisfeld & Balseiro | Ordovician (Tremadocian) | Cardonal Formation Santa Rosita Formation | Argentina | A member of Asaphidae belonging to the subfamily Isotelinae, a species of Asaphellus. |
| Brachymetaspis | Gen. et sp. nov | Valid | Gandl et al. | Early Carboniferous | | Spain | A member of the family Proetidae belonging to the subfamily Drevermanniinae. The type species is B. coniceps. |
| Burlingia balangensis | Sp. nov | Valid | Yuan & Esteve | Early Cambrian | | China | A species of Burlingia. |
| Cambroproteus | Gen. et sp. nov | Valid | Geyer | Middle Cambrian | Jbel Wawrmast Formation | Morocco | A member of Ptychopariida and Ptychoparioidea of uncertain phylogenetic placement. The type species is Cambroproteus lemdadensis. |
| Caznaia coreaensis | Sp. nov | Valid | Park & Kihm | Cambrian (Furongian) | Hwajeol Formation | South Korea | A member of the family Saukiidae, a species of Caznaia. |
| Chlupacula (Avenconia) | Subgen et 2 sp. nov | Valid | Gandl et al. | Early Carboniferous | | Spain | A member of the family Proetidae belonging to the subfamily Cyrtosymbolinae. The subgenus includes new species Chlupacula (Avenconia) avenconis and Chlupacula (Avenconia) canpuigensis. |
| Chlupacula (Chlupacula) greilingi | Sp. nov | Valid | Gandl et al. | Early Carboniferous | | Spain | A member of the family Proetidae belonging to the subfamily Cyrtosymbolinae. |
| Colombianaspis | Gen. et sp. nov | Valid | Morzadec in Morzadec et al. | Devonian (late Emsian) | Floresta Formation | Colombia | A calmoniid. The type species is Colombianaspis carvalhoae. |
| Dactylocephalus levificatus | Sp. nov | Valid | Ghobadi Pour & Popov in Kebria-ee Zadeh et al. | Ordovician (Tremadocian) | Mila Formation | Iran | A dikelokephalinid asaphid, a species of Dactylocephalus. |
| Dalmanitina (Dalmanitina) dargazensis | Sp. nov | Valid | Fortey & Heward | Late Ordovician | Seyahou Formation | Iran | A species of Dalmanitina. |
| Diademaproetus dianae | Sp. nov | Valid | Van Viersen | Devonian (Eifelian) | | Belgium | A member of Proetidae belonging to the subfamily Cornuproetinae. |
| Drevermannia (Paradrevermannia) | Subgen. et sp. nov | Valid | Gandl et al. | Early Carboniferous | | Spain | A member of the family Proetidae belonging to the subfamily Drevermanniinae. The type species is Drevermannia (Paradrevermannia) fastigata. |
| Drevermannia (Pseudodrevermannia) manevilai | Sp. nov | Valid | Gandl et al. | Early Carboniferous | | Spain | A member of the family Proetidae belonging to the subfamily Drevermanniinae. |
| Eoptychoparia tafilaltensis | Sp. nov | Valid | Geyer | Cambrian | Jbel Wawrmast Formation | Morocco | A member of Ptychopariidae, a species of Eoptychoparia. |
| Goldius endelsi | Sp. nov | Valid | Van Viersen | Devonian (Eifelian) | | Belgium | A member of Styginidae belonging to the subfamily Scutelluinae. |
| Granularaspis bommeli | Sp. nov | Valid | Geyer | Middle Cambrian | Jbel Wawrmast Formation | Morocco | A member of Corynexochida, a species of Granularaspis. |
| Gudralisium rossumi | Sp. nov | Valid | Van Viersen | Devonian (Eifelian-Givetian) | Hanonet Formation | Belgium | A member of Acastidae belonging to the subfamily Asteropyginae. |
| Gunnia fava | Sp. nov | Valid | Smith, Brock & Paterson | Cambrian | Tempe Formation | Australia | A ptychopariid, a species of Gunnia. |
| Heliopeltis | Gen. et 2 sp. nov | Valid | Feist & Chatterton | Early Devonian | | Morocco | A kolihapeltine scutelluid. Genus contains two species: H. ihmadii and H. johnsoni. |
| Hentigia ornata | Sp. nov | Valid | Fortey & Heward | Permian (Kungurian–Roadian) | | Oman | A phillipsiid, a species of Hentigia. |
| Iranaspidion elephas | Sp. nov | Valid | Fortey & Heward | Permian (Kungurian–Roadian) | | Oman | A phillipsiid, a species of Iranaspidion. |
| Kettneraspis? prescheri | Sp. nov | Valid | Van Viersen & Heising | Devonian (Pragian) | Ihandar Formation | Morocco | A member of Odontopleuridae, possibly a species of Kettneraspis. |
| Koldinioidia choii | Sp. nov | Valid | Park & Kihm | Cambrian (Furongian) | Hwajeol Formation | South Korea | A member of the family Shumardiidae, a species of Koldinioidia. |
| Kolihapeltis bassei | Sp. nov | Valid | Feist & Chatterton | Early Devonian | | Morocco | A kolihapeltine scutelluid, a species of Kolihapeltis. |
| Kolihapeltis tafilaltensis | Sp. nov | Valid | Feist & Chatterton | Early Devonian | | Morocco | A kolihapeltine scutelluid, a species of Kolihapeltis. |
| Liobole (Liobole ?) angustigena | Sp. nov | Valid | Gandl et al. | Early Carboniferous | | Spain | A member of the family Proetidae belonging to the subfamily Mirabolinae. |
| Liobole (Quadratibole) | Subgen et sp. nov | Valid | Gandl et al. | Early Carboniferous | | Spain | A member of the family Proetidae belonging to the subfamily Mirabolinae. The subgenus includes new species Liobole (Quadratibole) quadraticeps. |
| Lunagraulos | Gen. et comb. et sp. nov | Valid | Liñán, Vintaned & Gozalo | Cambrian (Ovetian) | La Herrería Formation Tamames Sandstone | Spain | A new genus for "Agraulos" antiquus Sdzuy (1961); genus also includes new species Lunagraulos tamamensis. |
| Menorcaspis ? arcanensis | Sp. nov | Valid | Gandl et al. | Early Carboniferous | | Spain | A member of the family Proetidae belonging to the subfamily Drevermanniinae. |
| Menorcaspis calamicensis brevicauda | Subsp. nov | Valid | Gandl et al. | Early Carboniferous | | Spain | A member of the family Proetidae belonging to the subfamily Drevermanniinae. |
| Menorcaspis papiolensis | Sp. nov | Valid | Gandl et al. | Early Carboniferous | | Spain | A member of the family Proetidae belonging to the subfamily Drevermanniinae. |
| Menorcaspis tiedti antecedens | Subsp. nov | Valid | Gandl et al. | Early Carboniferous | | Spain | A member of the family Proetidae belonging to the subfamily Drevermanniinae. |
| Menorcaspis weisflogi | Sp. nov | Valid | Gandl et al. | Early Carboniferous | | Spain | A member of the family Proetidae belonging to the subfamily Drevermanniinae. |
| Nepea ommacrada | Sp. nov | Valid | Smith, Paterson & Brock | Cambrian (Templetonian) | Giles Creek Dolostone | Australia | A member of Nepeidae, a species of Nepea. |
| Niordilobites | Gen. et comb. nov | Valid | Geyer & Corbacho | Cambrian | | Sweden | A burlingiid; a new genus for "Schmalenseeia" acutangula Westergård (1948). |
| Ovatoryctocara sinensis | Sp. nov | Valid | Zhao et al. | Cambrian | Kaili Formation | China | An oryctocephalid trilobite, a species of Ovatoryctocara. |
| Penarosa oepiki | Sp. nov | Valid | Smith, Paterson & Brock | Cambrian (Templetonian) | Giles Creek Dolostone | Australia | A member of Nepeidae, a species of Penarosa. |
| Pengia | Gen. et comb. nov | Valid | Geyer & Corbacho | Cambrian | | China | A burlingiid; a new genus for "Schmalenseeia" fusilis Peng, Babcock & Lin (2004). |
| Phaetonellus lelubrei | Sp. nov | Valid | Van Viersen | Devonian (Eifelian) | | Belgium | A member of Tropidocoryphidae belonging to the subfamily Eremiproetinae. |
| Pudoproetus (Belgiproetus) | Subgen. et 2 sp. et comb. nov | Valid | Müller & Hahn | Carboniferous (Mississippian) | | Afghanistan  Belgium  Iran  Russia  Turkey  Germany? | A member of Proetidae, a subgenus of Pudoproetus. The type species is Pudoproetus (Belgiproetus) lelubrei; the subgenus also includes new species P. (B). praedicatus, as well as P. (B.) albiorix (Hahn, Hahn & Brauckmann, 1980), P. (B.) cellesensis (Hahn, Hahn & Brauckmann, 1980), P. (B.) damghanensis (Hahn, Müller & Aghababalou, 2013), P. (B.) incertus (Hahn, Hahn & Brauckmann, 1980), P. (B.) teutates (Hahn, Hahn & Brauckmann, 1980), P. (B.) toutiorix (Hahn, Hahn & Brauckmann, 1980) and P. (B.) ussuilensis (Nalivkin, in Weber, 1937). |
| Radnoria guyi | Sp. nov | Valid | Pereira et al. | Late Ordovician | Cabeço do Peão Formation | Portugal | A member of Brachymetopidae, a species of Radnoria. |
| Rozovia | Nom. nov | Valid | Doweld | Late Cambrian | | Russia | A replacement name for Nordia Rozova (1968) (preoccupied). |
| Sagittapeltis belkai | Sp. nov | Valid | Feist & Chatterton | Early Devonian | | Morocco | A kolihapeltine scutelluid, a species of Sagittapeltis. |
| Schopfaspis shergoldi | Sp. nov | Valid | Smith, Paterson & Brock | Cambrian (Templetonian) | Giles Creek Dolostone | Australia | A member of Alokistocaridae, a species of Schopfaspis. |
| Semiproetus (Brevibole) trigonifrons | Sp. nov | Valid | Gandl et al. | Early Carboniferous | | Spain | A member of the family Proetidae belonging to the subfamily Cyrtosymbolinae. |
| Simulopaladin | Gen. et sp. nov | Valid | Fortey & Heward | Permian (Kungurian–Roadian) | | Oman | A phillipsiid. The type species is Simulopaladin tridentifer. |
| Struvephacops | Nom. nov | Valid | Ghobadi Pour | Early Devonian | Heisdorf Formation | Germany | A member of Phacopida; a replacement name for Cultrops Struve (1995) (preoccupied). |
| Triproetus bonbon | Sp. nov | Valid | Fortey & Heward | Permian (Kungurian–Roadian) | | Oman | A member of Proetidae, a species of Triproetus. |
| Weyeraspis (Canovesia) | Subgen et sp. nov | Valid | Gandl et al. | Early Carboniferous | | Spain | A member of the family Proetidae belonging to the subfamily Cyrtosymbolinae. The subgenus includes new species Weyeraspis (Canovesia) canovesensis. |

## Other arthropods

| Name | Novelty | Status | Authorship of new name | Age | Unit | Location | Notes |
| Ankitokazocaris bandoi | Sp. nov | Valid | Ehiro & Kato in Ehiro et al. | Early Triassic (Olenekian) | Osawa Formation | Japan | A member of Thylacocephala (a group of arthropods of uncertain phylogenetic placement, possibly crustaceans), a species of Ankitokazocaris. |
| Dytikosicula | Gen. et sp. nov | Valid | Conway Morris et al. | Cambrian | Marjum Formation | United States | A putative megacheiran. The type species is Dytikosicula desmatae. |
| Etainia | Gen. et sp. nov | Valid | Legg & Hearing | Middle Ordovician | Llanfallteg Formation | United Kingdom | An arthropod of xenopod affinities. The type species is Etainia howellsorum. |
| Flumenoglacies | Gen. et sp. nov | Valid | Peel & Steng | Cambrian | Ekspedition Brae Formation Stephen Formation | Canada  Greenland | A member of Bradoriida. The type species is Flumenoglacies groenlandica. |
| Houia | Gen. et comb. nov | Valid | Selden, Lamsdell & Qi | Devonian (Lochkovian) | Xiaxishancun Formation | China | A chelicerate belonging to the lineage that branched from the main euchelicerate lineage prior to the divergence of Eurypterida, Arachnida and Chasmataspidida; a new genus for "Kasibelinurus" yueya Lamsdell, Xue & Selden (2013). |
| Isoxys mackenziensis | Sp. nov | Valid | Kimmig & Pratt | Cambrian (Drumian) | Rockslide Formation | Canada | An arthropod of uncertain phylogenetic placement, a species of Isoxys. |
| Kitakamicaris | Gen. et sp. nov | Disputed | Ehiro & Kato in Ehiro et al. | Early Triassic (Olenekian) | Osawa Formation | Japan | A member of Thylacocephala (a group of arthropods of uncertain phylogenetic placement, possibly crustaceans). The type species is Kitakamicaris utatsuensis. Laville et al. (2021) transferred K. utatsuensis to the genus Ankitokazocaris, while Ehiro and Kano (2024) denied that. |
| Notchia | Gen. et sp. nov | Valid | Lerosey-Aubril | Cambrian (late Guzhangian) | Weeks Formation | United States | An arthropod of uncertain phylogenetic placement. The type species is Notchia weugi. |
| Pentecopterus | Gen. et sp. nov | Valid | Lamsdell et al. | Ordovician (Darriwilian) | Winneshiek Shale Formation | United States | A megalograptid eurypterid. The type species is Pentecopterus decorahensis. |
| Surusicaris | Gen. et sp. nov | Valid | Aria & Caron | Cambrian | Stephen Formation | Canada | A relative of Isoxys. The type species is Surusicaris elegans. |
| Tanglangia rangatanga | Sp. nov | Valid | Paterson, Edgecombe & Jago | Cambrian | Emu Bay Shale | Australia | A member of (possibly paraphyletic) group Megacheira, a species of Tanglangia. |
| Wiedopterus | Gen. et sp. nov | Valid | Poschmann | Early Devonian | | Germany | A eurypterid. The type species is Wiedopterus noctua. |
| Winneshiekia | Gen. et sp. nov | Valid | Lamsdell et al. | Ordovician (Darriwilian) | Winneshiek Lagerstätte | United States | A chelicerate sister to the clade comprising chasmataspidids, eurypterids, arachnids and Houia. The type species is Winneshiekia youngae. |
| Yawunik | Gen. et sp. nov | Valid | Aria, Caron & Gaines | Middle Cambrian | Burgess Shale | Canada | A relative of Leanchoilia. The type species is Yawunik kootenayi. |
| Yohoia utahana | Sp. nov | Valid | Conway Morris et al. | Cambrian | | United States | |