# List of the Mesozoic life of Alaska

This list of the Mesozoic life of Alaska contains the various prehistoric life-forms whose fossilized remains have been reported from within the US state of Alaska and are between 252.17 and 66 million years of age.

## A

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* B
* C
* D
* E
* F
* G
* H
* I
* J
* K
* L
* M
* N
* O
* P
* Q
* R
* S
* T
* U
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* X
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* Acila
* †Actinoceramus
** †Actinoceramus concentricus
** †Actinoceramus sulcatus
* Life restoration of the Late Cretaceous dome-headed dinosaur Alaskacephale and inset diagram depicting it with an anachronistic human to scale †Alaskacephale – type locality for genus
** †Alaskacephale gangloffi – type locality for species
* †Allocotidus – type locality for genus
** †Allocotidus bruesi – type locality for species
* †Alpinophyllia
** †Alpinophyllia flexuosa
* †Amaltheus
* †Amblydactylus
* †Amblysiphonella
* †Amoeboceras
* †Ampakabastraea
** †Ampakabastraea cowichanensis
** †Ampakabastraea nodosa – or unidentified comparable form
* Amusium
* †Anagaudryceras
** †Anagaudryceras auranium
** †Anagaudryceras aurarium
** †Anagaudryceras inflatus
** †Anagaudryceras sacya – type locality for species
* Fossilized shell of the Late Cretaceous ammonoid cephalopod Anapachydiscus †Anapachydiscus
** †Anapachydiscus nelchinensis – type locality for species
* †Anatomites
** †Anatomites externiplicatus
** †Anatomites septentrionalis – type locality for species
* †Andangularia
** †Andangularia wilsoni – type locality for species
* †Anomia
* †Anoptychia – tentative report
* †Anthostylis
** †Anthostylis acanthophora
* †Antiquilima – tentative report
* †Aopullina – tentative report
* †Aquilapollenites
** †Aquilapollenites decorus
** †Aquilapollenites fusiformis
** †Aquilapollenites quadrilobus
** †Aquilapollenites reticulatus
** †Aquilapollenites scabridus
* †Arcestes
* †Archaeocidaris – tentative report
* †Archaeodictyomitra
** †Archaeodictyomitra exigua – type locality for species
* †Archaeospongoprunum
** †Archaeospongoprunum helense – type locality for species
* †Arcthoplites
** †Arcthoplites belli
** †Arcthoplites talkeetnanus
* Arctica – tentative report
* Fossilized shells of the Middle Jurassic ammonoid cephalopod Arcticoceras †Arcticoceras
* †Arctocephalites
** †Arctocephalites alticostus
** †Arctocephalites costidensus – type locality for species
** †Arctocephalites pompeckji
* †Arctoceras
** †Arctoceras blomstrandi
** †Arctoceras tuberculatum
** †Arctoceras tuberculatus
* †Arctopteris
** †Arctopteris kolymensis – or unidentified related form
** †Arctopteris rarinervis
* †Areaseris
** †Areaseris nevadensis
* †Arieticeras
** †Arieticeras domarense – or unidentified related form
* Fossilized shell of the Early Jurassic ammonoid cephalopod Arnioceras †Arnioceras
** †Arnioceras arnouldi – or unidentified comparable form
* †Arpadites – tentative report
* †Aspenites
** †Aspenites acutus
* Astarte
** †Astarte carlottensis
* †Asthenoceras
** †Asthenoceras nannodes – or unidentified related form
* †Astraeomorpha
** †Astraeomorpha confusa
** †Astraeomorpha crassisepta
* †Astrocoenia – tentative report
* †Atractites
* †Atreta
* †Aucella
** †Aucella okensis
** †Aucella spitiensis
** †Aucella subokensis
* †Aucellina
* Avicula
** †Avicula soperi
* Mold fossil of a shell of the Early Devonian-Late Triassic bivalve Aviculopecten †Aviculopecten
* †Azonia
** †Azonia cribrata
** †Azonia pulchella
** †Azonia strictiparva

## B

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* Fossilized shell of the Late Cretaceous ammonoid cephalopod Baculites †Baculites
** †Baculites occidentalis
* †Badouxia
** †Badouxia canadensis
** †Badouxia columbiae
* †Bathysiphon
* †Belemnites
* †Betraccium
** †Betraccium perilense – or unidentified related form
* †Bipedis
** †Bipedis acrostylus
* †Biplica
* †Birisia
** †Birisia alata
** †Birisia ochotica
** †Birisia oerstedtii – or unidentified comparable form
* †Bisulcocypridea
* †Bositra
** †Bositra buchi – or unidentified comparable form
* †Bradfordia
** †Bradfordia oppeliiformis – type locality for species
* †Brewericeras
** †Brewericeras breweri
** †Brewericeras hulenense
** †Brewericeras hulense – or unidentified comparable form
* †Buchia
** †Buchia bronni – or unidentified comparable form
** †Buchia concentrica
** †Buchia crassicolis
** †Buchia crassicollis
** †Buchia fischeriana – or unidentified related form
** †Buchia keyserlingi
** †Buchia mosquensis
** †Buchia pacifica
** †Buchia pallasi – or unidentified comparable form
** †Buchia piochii
** †Buchia rugosa
** †Buchia solida
** †Buchia sublaevis
* †Bullatimorphites
** †Bullatimorphites varicostatum – type locality for species

## C

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* Fossilized shell of the Middle Jurassic ammonoid cephalopod Cadoceras †Cadoceras
** †Cadoceras bathomphalum – type locality for species
** †Cadoceras catostoma
** †Cadoceras chinitnense – type locality for species
** †Cadoceras comma – type locality for species
** †Cadoceras crassicostatum – type locality for species
** †Cadoceras doroschini
** †Cadoceras glabrum – type locality for species
** †Cadoceras grewingki
** †Cadoceras kialagvikense – type locality for species
** †Cadoceras petelini
** †Cadoceras schmidti
** †Cadoceras tenuicostatum – type locality for species
** †Cadoceras wosnessenskii
* Fossilized shell of the Early Jurassic-Early Cretaceous ammonoid cephalopod Calliphylloceras †Calliphylloceras
** †Calliphylloceras aldersoni – or unidentified comparable form
** †Calliphylloceras freibrocki – type locality for species
** †Calliphylloceras nizinanum – type locality for species
* †Callistopollenites
** †Callistopollenites radiostriatus
* †Callizoniceras
* †Callospiriferina
** †Callospiriferina tumida
* †Calycoceras
* †Camptonectes
** †Camptonectes dettermani
* †Canadoceras
** †Canadoceras kossmati – or unidentified comparable form
** †Canadoceras newberryanum
** †Canadoceras yokoyamai
* †Candonopsis – tentative report
* †Canutus – tentative report
** †Canutus ingrahamensis
* †Capnuchosphaera
** †Capnuchosphaera deweveri – or unidentified related form
** †Capnuchosphaera lenticulata – or unidentified related form
** †Capnuchosphaera mexicana
** †Capnuchosphaera schenki
** †Capnuchosphaera smithorum
** †Capnuchosphaera theoloides – or unidentified related form
** †Capnuchosphaera tricornis
* Shells of modern Capulus cap sea snails Capulus – tentative report
* Cardinia
* Cardita – tentative report
* †Cassianella
** †Cassianella cordillerana – type locality for species
** †Cassianella gravinaensis – type locality for species
** †Cassianella lingulata
* †Cavussurella
** †Cavussurella grammi – type locality for species
* †Cedriplites
** †Cedriplites canadensis
* Life restoration of the Late Triassic-Middle Jurassic nautiloid cephalopod Cenoceras †Cenoceras
** †Cenoceras imlayi – type locality for species
* †Cephalotaxopsis
** †Cephalotaxopsis intermedia
* †Ceratites
* †Cercomya – tentative report
* †Ceriostella
** †Ceriostella martini
** †Ceriostella parva
* Cerithium – tentative report
* †Chandlerichthys – type locality for genus
** †Chandlerichthys strickeri – type locality for species
* †Chinitnites
** †Chinitnites parviformus – type locality for species
* Chlamys
* †Choffatia
* †Chondrites – tentative report
** †Chondrites heeri – or unidentified comparable form
* †Chondrocoenia
** †Chondrocoenia paradoxa – or unidentified comparable form
* †Chonetes – tentative report
* †Christitys
** †Christitys martini – type locality for species
* †Chulitnacula
** †Chulitnacula alaskana – type locality for species
* Shell and spines of a Cidaris sea urchin Cidaris – tentative report
* †Cimolodon
* Cladophlebis
** †Cladophlebis hirta – tentative report
* †Claraia
** †Claraia stachei
* †Cleoniceras
** †Cleoniceras overbecki – type locality for species
* †Clionitites – tentative report
* †Cobbanites
** †Cobbanites talkeetnanus
* †Coccophyllum
* †Collonia
** †Collonia occidentalis – or unidentified comparable form
* †Coniopteris
** †Coniopteris arctica - or unidentified loosely related form
** †Coniopteris saportana
* †Conucardia
* †Corum
** †Corum perfectum
** †Corum regium
** †Corum speciosum
* †Cosmonautilus – tentative report
* †Costispiriferina
** †Costispiriferina pittensis – or unidentified related form
* †Covracythere
** †Covracythere binoda – type locality for species
** †Covracythere gryci – type locality for species
* †Cranwellia
** †Cranwellia rumseyensis
** †Cranwellia striata
* †Crassistella
** †Crassistella juvavica
** †Crassistella parvula
** †Crassistella vesiculosa – or unidentified comparable form
* †Crenipecten – tentative report
** †Crenipecten crenulatus – or unidentified comparable form
* †Crucella
** †Crucella magna – type locality for species
* †Ctenis
* †Ctenophyllum
** †Ctenophyllum angustifolim – tentative report
* †Cuifia
** †Cuifia marmorea – or unidentified comparable form
* †Curtoseris
** †Curtoseris dunlapcanyonae
* †Cyathocoenia
* †Cycloceltites
** †Cycloceltites arduini – or unidentified comparable form
* †Cylindroteuthis
* †Cypridea
* †Cyrtia
* †Cyrtina – report made of unidentified related form or using admittedly obsolete nomenclature

## D

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* Life restoration of the Early Jurassic ammonoid cephalopod Dactylioceras †Dactylioceras
** †Dactylioceras commune – or unidentified comparable form
** †Dactylioceras kanense
* †Dagyspirifer – type locality for genus
** †Dagyspirifer fascicostata – type locality for species
* †Damesites
** †Damesites hetonaiensis
* †Daonella
* †Daxatina
** †Daxatina canadensis – or unidentified comparable form
* Dentalina
* †Dentalium
* †Desmiophyllum
** †Desmiophyllum magnum
** †Desmiophyllum spp.
* †Desmoceras
** †Desmoceras japonicum
* †Desmophyllites
** †Desmophyllites diphylloides
* †Dettermania
** †Dettermania truncata – type locality for species
* Dicotylophyllum
** †Dicotylophyllum spp.
* †Dictyophyllum
** †Dictyophyllum nilssoni
* Restoration of several species of the Late Cretaceous ammonoid cephalopod Didymoceras †Didymoceras
** †Didymoceras hornbyense – or unidentified related form
* †Dielasma – tentative report
** †Dielasma chapini – type locality for species
* †Dieneroceras
** †Dieneroceras dieneri
* †Dimyodon
** †Dimyodon storrsi
* †Diplomoceras
** †Diplomoceras notabile
** †Diplomoceras notable
* †Discamphiceras
** †Discamphiceras reissi – or unidentified related form
** †Discamphiceras silberlingi – or unidentified comparable form
* †Discophyllites
** †Discophyllites patens
* †Discotropites
** †Discotropites davisi
** †Discotropites mojsvarensis
** †Discotropites sandlingensis
* †Distichomeandra
** †Distichomeandra austriaca
** †Distichomeandra minor
* †Distichophyllia
** †Distichophyllia marmorea
** †Distichophyllia melnikovae – type locality for species
** †Distichophyllia norica
* Ditrupa
** †Ditrupa cornu – type locality for species
* †Divatella
** †Divatella robinsoni – type locality for species
* †Docidoceras
** †Docidoceras camachoi – type locality for species
** †Docidoceras longalvum – or unidentified related form
** †Docidoceras paucinodosum – type locality for species
** †Docidoceras widebayense – type locality for species
* Fossilized shell of the Early-Late Cretaceous ammonoid cephalopod Douvilleiceras †Douvilleiceras
** †Douvilleiceras mammillatum
* †Dromaeosaurus
** †Dromaeosaurus albertensis

## E

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* †Edmontonia
* Restoration of the Late Cretaceous duck-billed dinosaur Edmontosaurus annectens †Edmontosaurus – or unidentified related form
** †Edmontosaurus saskatchewanensis
* †Eleganticeras
** †Eleganticeras exaratum – or unidentified comparable form
* †Ellisonia
** †Ellisonia triassica
* †Elymella – tentative report
** †Elymella nuculoides – or unidentified comparable form
* †Elysastraea
** †Elysastraea profunda
** †Elysastraea vancouverensis
* †Enantigonathus
** †Enantigonathus mungoensis
** †Enantigonathus ziegleri
* †Entolium
** †Entolium utukokense – type locality for species
** †Entolium yukonensis – type locality for species
* †Entollum
* †Eocomoseris
** †Eocomoseris ramosa
* †Eogunnarites
** †Eogunnarites alaskaensis
** †Eogunnarites alaskensis
* †Eolytoceras
** †Eolytoceras tasekoi – or unidentified comparable form
* †Eopecten – tentative report
* †Epigondolella
** †Epigondolella bidentata – or unidentified comparable form
* †Eptingium
** †Eptingium manfredi – or unidentified comparable form
* †Equisetites
** †Equisetites burejensis
* †Erdtmanipollis
** †Erdtmanipollis procumbentiformis
* †Erycites
** †Erycites howelli
* †Euaptetoceras
** †Euaptetoceras amplectens
** †Euaptetoceras nucleospinosum – or unidentified related form
* Fossilized shell of the Late Cretaceous ammonoid cephalopod Eubostrychoceras †Eubostrychoceras
** †Eubostrychoceras japonicum – or unidentified comparable form
* †Eudmetoceras
** †Eudmetoceras eudmetum – or unidentified related form
* †Euflemingites
** †Euflemingites cirratus
** †Euflemingites romunderi
* †Eumorphotis
** †Eumorphotis nationalis – type locality for species
* †Euomphaloceras
* †Euomphalus
* †Euphyllites – tentative report

## F

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* †Faguspollenites
** †Faguspollenites granulatus
* †Fanninoceras
** †Fanninoceras carlottense
** †Fanninoceras fannini
** †Fanninoceras maudense – or unidentified comparable form
* †Ferresium
* †Fibulapollis
* †Fissirhynchia
** †Fissirhynchia fissicostata
* †Flaventia – tentative report
** †Flaventia kukpowrukensis – type locality for species
* †Franziceras – tentative report
* †Freboldiceras – type locality for genus
** †Freboldiceras singulare – type locality for species
* †Fresvillia
** †Fresvillia teres – or unidentified related form

## G

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* †Gabbioceras
* †Gablonzeria
** †Gablonzeria grandiosa
** †Gablonzeria major
** †Gablonzeria profunda
* Fossilized shell of the Cretaceous ammonoid cephalopod Gaudryceras †Gaudryceras
** †Gaudryceras denseplicatum – or unidentified related form
** †Gaudryceras hobetsense
** †Gaudryceras tenuiliratum
* †Gavellinella
** †Gavellinella velascoensis – or unidentified comparable form
* †Germanonautilus
** †Germanonautilus brooksi – type locality for species
* †Gervillia
** †Gervillia spp.
* Ginkgo
** Restored foliage of the Late Cretaceous-Miocene ginkgo tree Ginkgo adiantoides †Ginkgo adiantoides - or unidentified loosely related form
** †Ginkgo concinna - or unidentified loosely related form
* Gleichenia
** †Gleichenia pseudocrenata – or unidentified comparable form
* †Glossites – tentative report
** †Glossites lingualis – or unidentified comparable form
* †Goniomya – tentative report
* †Gonodon – tentative report
* †Gowericeras
** †Gowericeras snugharborense – type locality for species
** †Gowericeras spinosum – type locality for species
* †Grammatodon
* †Grantziceras
** †Grantziceras affine
** †Grantziceras glabrum
* Interior and exterior of a fossilized shell of the Late Triassic-Eocene marine bivalve Gryphaea †Gryphaea
** †Gryphaea arcuataeformis
** †Gryphaea arcusta – or unidentified comparable form
** †Gryphaea cymbium – or unidentified comparable form
** †Gryphaea impressimarginata
** †Gryphaea keilhaui – or unidentified comparable form
** †Gryphaea rockymontana
* †Gulielmiceras
** †Gulielmiceras alaskanum – type locality for species
* Guttulina
* †Gymnocodium
** †Gymnocodium bellerophontis
* †Gypsonictops – or unidentified comparable form
* Gyroidinoides

## H

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* †Halobia
** †Halobia alaskana – type locality for species
** †Halobia austriaca
** †Halobia brooksi – type locality for species
** †Halobia cordillerana
** †Halobia dalliana – type locality for species
** †Halobia dilatata
** †Halobia distincta
** †Halobia fallax
** †Halobia halorica
** †Halobia lineata
** †Halobia ornatissima
** †Halobia septentrionalis – type locality for species
** †Halobia superba
** †Halobia sustriaca
** †Halobia symmetrica – type locality for species
* †Halomitra – report made of unidentified related form or using admittedly obsolete nomenclature
** †Halomitra triadica
* †Halorella – tentative report
* †Halorites
* †Hamulus – tentative report
* †Hannaoceras – tentative report
* Haplophragmoides
* †Hauerites
* †Healdia
* †Hebetoxyites
** †Hebetoxyites hebes – or unidentified related form
* †Heilungia
** †Heilungia oloensis – or unidentified comparable form
* †Heptastylis
* Life restoration of the Late Cretaceous toothed bird Hesperornis †Hesperornis
* †Heterastridium
** †Heterastridium conglobatum
* Heteropora
* †Hiatobairdia
** †Hiatobairdia arcuata
* †Higumastra
** †Higumastra transversa – type locality for species
* †Hildaites – tentative report
* †Himavatites – tentative report
** †Himavatites multiauritis – or unidentified comparable form
* †Holcophylloceras
** †Holcophylloceras costisparsum
* †Hoplotropites
** †Hoplotropites jokelyi – or unidentified comparable form
* †Hsuum – tentative report
** †Hsuum inexploratum – type locality for species
* †Hulenites
** †Hulenites reesidei – or unidentified comparable form
* †Hypophylloceras
** †Hypophylloceras californicatus – or unidentified comparable form
** †Hypophylloceras californicum – or unidentified comparable form

## I

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* †Iniskinites
** †Iniskinites abruptus – type locality for species
** †Iniskinites intermedius – type locality for species
** †Iniskinites magniformus
** †Iniskinites martini – type locality for species
* Fossilized shell of the Early Jurassic-Late Cretaceous marine bivalve Inoceramus with a human indicating its size †Inoceramus
** †Inoceramus comancheanus
** †Inoceramus cuvieri – or unidentified comparable form
** †Inoceramus elegans – or unidentified related form
** †Inoceramus eximius
** †Inoceramus hobetsensis – or unidentified related form
** †Inoceramus mamatensis – or unidentified related form
** †Inoceramus naumanni – or unidentified comparable form
** †Inoceramus porrectus – or unidentified comparable form
** †Inoceramus schmidti
** †Inoceramus subundatus – or unidentified comparable form
** †Inoceramus teshioensis – or unidentified related form
** †Inoceramus yokoyamai – or unidentified comparable form
* †Integricorpus
* †Isastrea – tentative report
* Isocrinus
** †Isocrinus gravinse
* †Isocyprina – tentative report
* Fossilized shell of the Permian-modern marine bivalve Isognomon Isognomon – tentative report

## J

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* †Joannites
* †Juvavites
** †Juvavites knowltoni
** †Juvavites magnus – or unidentified comparable form
** †Juvavites subinterruptus
* †Juvenites
** †Juvenites septentrionalis

## K

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* †Kammerkarites
** †Kammerkarites frigga – or unidentified comparable form
** †Kammerkarites megastoma - or unidentified loosely related form
* †Kenella
** †Kenella filatovii
* †Kennicottia – type locality for genus
** †Kennicottia bifurcata – type locality for species
** †Kennicottia rugosa – type locality for species
* †Kepplerites
* †Kompsasteria
** †Kompsasteria oligocystis – or unidentified comparable form
* †Kosmoceras
** Fossilized shell of the Middle Jurassic ammonoid cephalopod Kosmoceras spinosum †Kosmoceras spinosum – or unidentified comparable form
* †Kuhnastraea
** †Kuhnastraea decussata
** †Kuhnastraea incrassata – type locality for species
* †Kukaspis – type locality for genus
** †Kukaspis usingeri – type locality for species

## L

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* †Laballa
** †Laballa suessi
* †Lanceolites
** †Lanceolites bicarinatus
** †Lanceolites compactus
* †Latimaeandra – report made of unidentified related form or using admittedly obsolete nomenclature
** †Latimaeandra alaskana
* †Leconteites
** †Leconteites deansi
** †Leconteites deansii
** †Leconteites modestus
* †Lemuroceras
** †Lemuroceras dubium – or unidentified comparable form
* †Leptaleoceras – tentative report
* †Liliacidites
** †Liliacidites variegatus
* †Lilloettia
** †Lilloettia buckmani
** †Lilloettia lilloetensis
** †Lilloettia mertonyarwoodi
** †Lilloettia milleri – type locality for species
** †Lilloettia stantoni – type locality for species
* Lima
** †Lima blackburnei – type locality for species
** †Lima kimballi – or unidentified related form
** †Lima martini – type locality for species
** †Lima spp.
* †Lioceratoides
** †Lioceratoides involutum – or unidentified comparable form
* †Liospiriferina
** †Liospiriferina rostrata
* †Lobites
** †Lobites pacianus – or unidentified comparable form
* †Lobothyris
** †Lobothyris monstrifer – or unidentified comparable form
** †Lobothyris mostrifer – or unidentified comparable form
** †Lobothyris praepunctata
** †Lobothyris punctata – or unidentified comparable form
* †Loranthacites
** †Loranthacites pilatus
* †Lucina
* Fossilized shell of the Early Jurassic-Late Cretaceous ammonoid cephalopod Lytoceras †Lytoceras
** †Lytoceras eudesianum – or unidentified related form
** †Lytoceras fimbriatum – or unidentified comparable form

## M

* A
* B
* C
* D
* E
* F
* G
* H
* I
* J
* K
* L
* M
* N
* O
* P
* Q
* R
* S
* T
* U
* V
* W
* X
* Y
* Z
* †Maclurites – tentative report
* †Macrophylloceras
** †Macrophylloceras grossicostatum
* †Maeandrostylis
** †Maeandrostylis grandiseptus
** †Maeandrostylis vancouverensis
* †Mancicorpus
** †Mancicorpus trapeziforme
* †Maoritrigonia
* †Margarastraea
** †Margarastraea eucystis
** †Margarastraea granissima
* Shell in multiple views of a Margarites sea snail Margarites
** †Margarites moffiti – type locality for species
* †Margaritropites
** †Margaritropites johnsoni
* †Margarosmilia
** †Margarosmilia chalyana – tentative report
** †Margarosmilia charlyana
** †Margarosmilia confluens
** †Margarosmilia richthofeni – or unidentified comparable form
* †Marginotruncana
** †Marginotruncana sigali – or unidentified comparable form
* †Marshallites
** †Marshallites cumshewaensis
* †Meekoceras
** †Meekoceras gracilitatis
* †Meginoceras
* †Meleagrinella
* †Mesochara
* †Mesopuzosia
** †Mesopuzosia indopacifica – or unidentified comparable form
* †Metapolygnathus
** †Metapolygnathus primitius
* †Metasibirites
* †Metussuria
** †Metussuria waageni
* †Microchara
* †Microdoma – tentative report
* †Microreticulatisporites
** †Microreticulatisporites uniformis
* Milax
** †Milax alienus – type locality for species
** †Milax flexuosus – type locality for species
** †Milax inflatus – type locality for species
* †Minetrigonia
** †Minetrigonia cairnesi – or unidentified comparable form
** †Minetrigonia suttonensis
* †Mirella
** †Mirella borealis – or unidentified related form
* Fossilized shell of a Modiolus, or horsemussel †Modiolus
* †Moffiites
** †Moffiites robustus
* †Moffites
** †Moffites robustus
* †Moffitites – type locality for genus
** †Moffitites crassus
** †Moffitites robustus – type locality for species
* †Mojsvaroceras – tentative report
* †Mongolocypris
* †Monotis
** †Monotis alaskana – type locality for species
** †Monotis anjuensis
** †Monotis daonellaeformis
** †Monotis haueri
** †Monotis jakutica
** †Monotis obtusicostata
** †Monotis ochotica
** †Monotis pachypleura
** †Monotis pinensis – tentative report
** †Monotis subcircularis
** †Monotis typica
* †Montlivaltia
** †Montlivaltia martini – type locality for species
* †Muelleritortis
** †Muelleritortis cochleata
* †Mullerites
** †Mullerites pleuroacanthitoides – or unidentified comparable form
* †Muramotoceras
** †Muramotoceras yezoense – or unidentified related form
* †Murchisonia – tentative report
* †Myoconcha
** †Myoconcha nana – or unidentified comparable form
* Fossilized shell of the Jurassic-Cretaceous marine bivalve Myophorella †Myophorella
** †Myophorella alaskaensis – type locality for species
** †Myophorella argo
** †Myophorella dawsoni
** †Myophorella devexa
** †Myophorella orientalis
** †Myophorella packardi
** †Myophorella tipperi
** †Myophorella tuxedniensis – type locality for species
* †Myophoria
** †Myophoria beringiana – type locality for species
* †Myphoria – tentative report
* †Mytiloceramus
** †Mytiloceramus lucifer
* †Mytiloides
** †Mytiloides stantoni
* Shells washed ashore of Mytilus mussels †Mytilus

## N

* A
* B
* C
* D
* E
* F
* G
* H
* I
* J
* K
* L
* M
* N
* O
* P
* Q
* R
* S
* T
* U
* V
* W
* X
* Y
* Z
* Life restoration of the Late Cretaceous tyrannosaur Nanuqsaurus †Nanuqsaurus – type locality for genus
** †Nanuqsaurus hoglundi – type locality for species
* Napora
** †Napora aculeata – type locality for species
** †Napora bukryi – or unidentified comparable form
** †Napora milleri – type locality for species
** †Napora pualensis – type locality for species
* †Nathorstites
** †Nathorstites alaskanus – type locality for species
* Natica
** †Natica spp.
* †Neogondelella
** †Neogondelella jubata
* †Neogondolella
** †Neogondolella navicula
** †Neogondolella silberlingi
** †Neogondolella tozeri
* †Neohimavatites
** †Neohimavatites canadensis – or unidentified comparable form
* †Neophylloceras
** †Neophylloceras hetonaiense
** †Neophylloceras ramosum
** †Neophylloceras seresitense
* †Neospathodus – report made of unidentified related form or using admittedly obsolete nomenclature
** †Neospathodus conservativus
* Shell in multiple views of a Nerita polita sea snail Nerita – tentative report
* †Neritaria
** †Neritaria nuetzeli – type locality for species
* Neritopsis
* †Nevadathalamia
** †Nevadathalamia cylindrica
** †Nevadathalamia minima – type locality for species
* †Nilsonia
** †Nilsonia decursiva – or unidentified comparable form
** †Nilsonia magnifolia
** †Nilsonia menneri
** †Nilsonia polymorpha
** †Nilsonia serotina – or unidentified comparable form
* Nodosaria
* †Novispathodus
** †Novispathodus waageni
* Interior of a fossilized shell of the Early Ordovician-modern marine bivalve Nucula Nucula
** †Nucula percrassa – or unidentified related form
* Nuculana – tentative report

## O

* A
* B
* C
* D
* E
* F
* G
* H
* I
* J
* K
* L
* M
* N
* O
* P
* Q
* R
* S
* T
* U
* V
* W
* X
* Y
* Z
* †Ogmoconcha
** †Ogmoconcha alaskaense – type locality for species
** †Ogmoconcha limbata – or unidentified related form
** †Ogmoconcha marquardti
** †Ogmoconcha owthropensis
** †Ogmoconcha tailleuri – type locality for species
** †Ogmoconcha unicerata – type locality for species
* †Omphaloptycha
* †Onychiopsis
** †Onychiopsis psilotoides – or unidentified comparable form
* †Ophiceras
** †Ophiceras commune
** †Ophiceras greenlandicum – or unidentified comparable form
* †Orbiculiforma
** †Orbiculiforma iniqua – type locality for species
** †Orbiculiforma multifora – or unidentified related form
* †Orbiculiformella – tentative report
** †Orbiculiformella incognita – type locality for species
* Ostrea
* †Otoceras
** †Otoceras boreale
* †Otoscaphites
** †Otoscaphites teshioensis
* †Otozamites
** †Otozamites bornholmiensis – tentative report
** †Otozamites pterophylloides
* †Owenites
** †Owenites koeneni – or unidentified comparable form
* Fossilized shell in multiple views of the Middle Jurassic ammonoid cephalopod Oxycerites †Oxycerites
** †Oxycerites chinitnana – type locality for species
* †Oxytoma

## P

* A
* B
* C
* D
* E
* F
* G
* H
* I
* J
* K
* L
* M
* N
* O
* P
* Q
* R
* S
* T
* U
* V
* W
* X
* Y
* Z
* †Pachydiscus
** †Pachydiscus hazzardi – type locality for species
** †Pachydiscus kamishakensis – type locality for species
** †Pachydiscus obsoletiformis – type locality for species
** †Pachydiscus ootacodensis
* Life restoration of two of the Late Cretaceous horned dinosaur Pachyrhinosaurus perotorum †Pachyrhinosaurus
** †Pachyrhinosaurus perotorum – type locality for species
* †Pagiophyllum
** †Pagiophyllum falcatum
** †Pagiophyllum triangulare
* †Palaeastraea
** †Palaeastraea borealis
** †Palaeastraea descussata
* †Palaeopharus
** †Palaeopharus buriji – or unidentified comparable form
* †Paleosaturnalis
* †Pamiroseris
** †Pamiroseris borealis – type locality for species
** †Pamiroseris meriani
** †Pamiroseris rectilamellosa – or unidentified comparable form
* Panopea
** †Panopea elongatissima – or unidentified comparable form
** †Panopea kissoumi
* †Pantanellium
** †Pantanellium fosteri – or unidentified related form
* †Paracadoceras
** †Paracadoceras chisikense – type locality for species
** †Paracadoceras moffiti – type locality for species
** †Paracadoceras multiforme
** †Paracadoceras tonniense – type locality for species
* †Paracuifia
** †Paracuifia anomala
** †Paracuifia jennieae – type locality for species
** †Paracuifia smithi – type locality for species
* †Paracyclas – tentative report
** †Paracyclas ellipticus – or unidentified comparable form
* †Paradelphinulopsis
** †Paradelphinulopsis vallieri
* †Parallelodon
** †Parallelodon cumshewaensis
** †Parallelodon simillimus
* †Paranannites
** †Paranannites aspenensis
** †Paranannites slossi
* †Parareineckeia
** †Parareineckeia hickersonensis – type locality for species
** †Parareineckeia shelikofana – type locality for species
* †Parasilesites – type locality for genus
** †Parasilesites bullatus – type locality for species
** †Parasilesites irregularis – type locality for species
* †Parastraeomorpha
** †Parastraeomorpha minuscula
* †Parataxodium
** †Parataxodium wigginsii – or unidentified comparable form
* †Paratropites
* †Parauvanella
** †Parauvanella ferdowsensis – or unidentified comparable form
* †Parkinsonia – tentative report
* †Paroecotraustes
* †Paronaella
** †Paronaella bandyi – or unidentified related form
** †Paronaella pessagnoi – type locality for species
** †Paronaella pygmaea – or unidentified related form
** †Paronaella venadoensis – or unidentified related form
** †Paronaella venusta – type locality for species
* †Partschiceras
** †Partschiceras ellipticum – type locality for species
** †Partschiceras grantzi – type locality for species
** †Partschiceras japonicum
** †Partschiceras subobtusiforme
* Parvamussium – report made of unidentified related form or using admittedly obsolete nomenclature
* †Parvicingula
** †Parvicingula blackhornensis
** †Parvicingula praeacutum – type locality for species
** †Parvicingula rothwelli – or unidentified related form
* †Patagiosites
** †Patagiosites alaskensis – type locality for species
* Patella – tentative report
* †Pecten
** †Pecten spp.
* †Pelekodites
** †Pelekodites pelekus – or unidentified comparable form
* †Pentacrinus
* Fossilized shell of the Cretaceous brachiopod Peregrinella †Peregrinella
** †Peregrinella chisania – type locality for species
* †Peribositria – report made of unidentified related form or using admittedly obsolete nomenclature
** †Peribositria mimer – tentative report
* †Perispyridium
** †Perispyridium alinchakense
** †Perispyridium dettermani
** †Perispyridium nitidum
* †Phacelophyllia – report made of unidentified related form or using admittedly obsolete nomenclature
** †Phacelophyllia suttonensis
* †Phacelostylophyllum
** †Phacelostylophyllum zitteli
* †Phloioceras
* †Phoenicopsis
** †Phoenicopsis angustifolia - or unidentified loosely related form
* Pholadomya
* Life restoration of the Early Jurassic-Late Cretaceous ammonoid cephalopod Phylloceras †Phylloceras
** †Phylloceras bakeri – type locality for species
* †Phyllopachyceras
** †Phyllopachyceras chitinanum – type locality for species
** †Phyllopachyceras forbesianum
** †Phyllopachyceras shastalense – or unidentified comparable form
* †Piarorhynchia – report made of unidentified related form or using admittedly obsolete nomenclature
** †Piarorhynchia hamiltonensis – type locality for species
* †Pinacoceras
** †Pinacoceras rex – or unidentified comparable form
* †Pinna
** †Pinna expansa – or unidentified comparable form
* †Pinnigena
* †Pityolepis – tentative report
* †Pityophyllum
** †Pityophyllum nordenskioldii - or unidentified loosely related form
** †Pityophyllum staratschinii - or unidentified loosely related form
* †Pityostrobus
** †Pityostrobus piceoides – or unidentified comparable form
* †Placites
* †Placunopsis – tentative report
* †Plagiostoma
* †Planolites – tentative report
* Leaves and fruit of a living Platanus, or plane tree Platanus
** †Platanus louravetlanica
* †Platyceras
* †Pleuroacanthites
** †Pleuroacanthites mulleri - or unidentified loosely related form
* †Pleuromya
** †Pleuromya carlottensis
* †Pleuronautilus
** †Pleuronautilus alaskensis – type locality for species
* †Pleurophorus – report made of unidentified related form or using admittedly obsolete nomenclature
** †Pleurophorus overbecki – type locality for species
* Pleurotomaria
* Plicatula
** †Plicatula perimbricata – or unidentified comparable form
** †Plicatula periobricata – or unidentified comparable form
* †Podozamites
** †Podozamites eichwaldii - or unidentified loosely related form
** †Podozamites spp.
* †Polycingulatisporites
** †Polycingulatisporites triangularis
* †Posidonia
* †Poulpus
** †Poulpus transitus
* †Praeparvicingula
** †Praeparvicingula communis – type locality for species
** †Praeparvicingula decora – or unidentified related form
** †Praeparvicingula inornata – type locality for species
** †Praeparvicingula prisca – type locality for species
* †Proarcestes
** †Proarcestes shastensis
* †Procerites
** †Procerites irregularis – type locality for species
* †Procyclolites
* †Projuvavites
** †Projuvavites brockensis
* †Promathildia – tentative report
* †Proptychites
** †Proptychites rosenkrantzei – or unidentified comparable form
* †Protocardia
* †Protocula
** †Protocula bassetti
* †Protorcula
** †Protorcula bassetti – type locality for species
* Fossilized shell of the Triassic ammonoid cephalopod Protrachyceras †Protrachyceras
* †Pseudammatoceras
** †Pseudammatoceras benneri – or unidentified related form
* †Pseudaptetoceras
** †Pseudaptetoceras klimakomphalum
* †Pseudobythocypris
* †Pseudocrucella
** †Pseudocrucella plana – type locality for species
** †Pseudocrucella prava – type locality for species
* †Pseudocycas
* †Pseudodictromitria
** †Pseudodictromitria carpatica
* †Pseudoencurtis
* †Pseudoheliodiscus
** †Pseudoheliodiscus viejoensis
* †Pseudolioceras
** †Pseudolioceras compactile – or unidentified comparable form
** †Pseudolioceras costistriatum – type locality for species
** †Pseudolioceras fastigatum – type locality for species
** †Pseudolioceras lythense – or unidentified comparable form
** †Pseudolioceras whiteavesi
* Fossilized shell of a Pseudomelania sea snail †Pseudomelania – tentative report
* †Pseudomonotis – tentative report
* †Pseudophyllites
** †Pseudophyllites indra
* †Pseudosageceras
* †Pseudoseptifer
* †Pseudospondylospira – type locality for genus
** †Pseudospondylospira perplexa – type locality for species
* †Pseudostylosphaera
** †Pseudostylosphaera coccostyle
** †Pseudostylosphaera helicatum
** †Pseudostylosphaera japonica
** †Pseudostylosphaera nazarovi
* †Pseudotoites
** †Pseudotoites argentinus – or unidentified comparable form
** †Pseudotoites transatlanticus – or unidentified comparable form
* †Pseudoxybeloceras – tentative report
* †Pteria
* †Pterophyllum
** †Pterophyllum aequale
** †Pterophyllum rajmahalense
* †Ptychoceras
** †Ptychoceras laeve – or unidentified comparable form
* †Ptyctothyris – report made of unidentified related form or using admittedly obsolete nomenclature
** †Ptyctothyris stephani
* Purpurina
** †Purpurina gravinaensis – type locality for species
* Fossilized shell of the Early-Late Cretaceous ammonoid cephalopod Puzosia †Puzosia
** †Puzosia alaskana – type locality for species
* †Puzosigella
** †Puzosigella perrinsmithi – or unidentified comparable form
** †Puzosigella spp.
** †Puzosigella taffi – or unidentified comparable form

## Q

* A
* B
* C
* D
* E
* F
* G
* H
* I
* J
* K
* L
* M
* N
* O
* P
* Q
* R
* S
* T
* U
* V
* W
* X
* Y
* Z
* †Quercoidites
** †Quercoidites genustriatus

## R

* A
* B
* C
* D
* E
* F
* G
* H
* I
* J
* K
* L
* M
* N
* O
* P
* Q
* R
* S
* T
* U
* V
* W
* X
* Y
* Z
* †Recytella
* †Reineckeites
** †Reineckeites stuebeli – or unidentified comparable form
* †Reineckia
** †Reineckia stuebeli – or unidentified comparable form
* †Retiophyllia
** †Retiophyllia caespitosa
** †Retiophyllia clathrata – type locality for species
** †Retiophyllia dawsoni
** †Retiophyllia delicatula
** †Retiophyllia fenestrata
** †Retiophyllia frechi – or unidentified comparable form
** †Retiophyllia norica
** †Retiophyllia obtusa
** †Retiophyllia oppeli
** †Retiophyllia parviseptum
** †Retiophyllia robusta – or unidentified comparable form
** †Retiophyllia tenuicosta
* Rhombocythere
* Fossilized shell of the Silurian-Eocene articulate brachiopod Rhynchonella †Rhynchonella
** †Rhynchonella blackwelderi – type locality for species

## S

* A
* B
* C
* D
* E
* F
* G
* H
* I
* J
* K
* L
* M
* N
* O
* P
* Q
* R
* S
* T
* U
* V
* W
* X
* Y
* Z
* †Sagenites – tentative report
* †Sagenopteris – tentative report
* †Sarla
** †Sarla vetusta
* †Saurexallopus
* Life restoration of the Late Cretaceous dromaeosaurid Saurornitholestes preying upon a multituberculate mammal †Saurornitholestes
** †Saurornitholestes langstoni
* †Saxoceras – tentative report
** †Saxoceras portlocki - or unidentified loosely related form
* †Scaphites
* †Scheffleraephyllum
** †Scheffleraephyllum venustum
* †Schizodus – tentative report
** †Schizodus appressus – or unidentified comparable form
* †Sciponoceras
* Scurria – tentative report
* †Seirocrinus
** †Seirocrinus subangularis
* †Septocardia
** †Septocardia pascoensis – or unidentified comparable form
** †Septocardia peruviana – or unidentified comparable form
* Serpula
* †Seymourites
** †Seymourites abruptus
** †Seymourites alticostatus – type locality for species
** †Seymourites gittinsi
** †Seymourites ingrahami
** †Seymourites mcevoyi
** †Seymourites multus
** †Seymourites plenus
** †Seymourites tychonis
* †Siemiradzkia – or unidentified comparable form
** †Siemiradzkia aurigera
* †Sigmopollis
** †Sigmopollis psilatus
* †Simbirskites
* †Sirenites
** †Sirenites hayesi – type locality for species
* Fossilized shells of the marine bivalve Solecurtus Solecurtus – tentative report
** †Solecurtus chapmani – type locality for species
* Solemya – tentative report
* †Solenopora
* †Sonninia
** †Sonninia alaskensis – type locality for species
** †Sonninia bifurcata – type locality for species
* †Spatulites
** †Spatulites spatians – or unidentified related form
* †Sphaerocladiscites
** †Sphaerocladiscites martini – type locality for species
** †Sphaerocladiscites mendenhalli – type locality for species
* †Sphaeroidochyria – tentative report
* Fossilized leaf of the Late Cretaceous ginkgo relative Sphenobaiera †Sphenobaiera
** †Sphenobaiera biloba - or unidentified loosely related form
** †Sphenobaiera czekanowskiana - or unidentified loosely related form
** †Sphenobaiera longifolia - or unidentified loosely related form
* †Spinidelphinulopsis
** †Spinidelphinulopsis whaleni
* †Spiriferina
** †Spiriferina borealis – tentative report
** †Spiriferina yukonensis – type locality for species
* †Spirocyclina – tentative report
* †Spirogmoceras
** †Spirogmoceras shastense – or unidentified comparable form
* †Spondylospira
** †Spondylospira lewesensis
* Shell of a Spondylus, or spiny oyster Spondylus – tentative report
* †Spongiomorpha
** †Spongiomorpha acyclica
** †Spongiomorpha gibbosa
** †Spongiomorpha ramosa
* †Steinmannites
* †Stellispongia
** †Stellispongia subsphaerica – or unidentified comparable form
* †Stenocadoceras
** †Stenocadoceras bowserense – type locality for species
** †Stenocadoceras iniskinense – type locality for species
** †Stenocadoceras multicostatum – type locality for species
** †Stenocadoceras pomeroyense – type locality for species
** †Stenocadoceras stenoloboide
** †Stenocadoceras striatum – type locality for species
* †Stenorachis
** †Stenorachis striolatus
* †Stereisporites
** †Stereisporites regium
* †Stromatomorpha
** †Stromatomorpha californica
* †Stylophyllum
** †Stylophyllum pygmaeum
* †Sunrisites – tentative report

## T

* A
* B
* C
* D
* E
* F
* G
* H
* I
* J
* K
* L
* M
* N
* O
* P
* Q
* R
* S
* T
* U
* V
* W
* X
* Y
* Z
* †Taeniopteris – tentative report
* †Tancredia
** †Tancredia kurupana – type locality for species
** †Tancredia stelcki
* Terebratula
* Fossils of the ichnogenus Teredolites, produced by bivalves boring into wood. Teredolites
* †Tetragonites
** †Tetragonites glabrus
** †Tetragonites kiliani
** †Tetragonites timotheanus – or unidentified related form
* †Thallites
** †Thallites arctica - or unidentified loosely related form
* †Thamnasteria
** †Thamnasteria borealis
** †Thamnasteria smithi
* †Thecosmilia – report made of unidentified related form or using admittedly obsolete nomenclature
* Thracia
** †Thracia semiplanata
** †Thracia stelcki
* †Tosapecten – tentative report
* †Trachyceras – tentative report
* †Triassocampe
** †Triassocampe deweveri
* †Triassocypris
* †Trichites – report made of unidentified related form or using admittedly obsolete nomenclature
* †Tricolpopollenites
** †Tricolpopollenites parvulus
* †Trigonarca – or unidentified comparable form
** †Trigonarca tumida
* †Trigonia
* †Trigonodus – tentative report
* †Tritrabs
** †Tritrabs worzeli – or unidentified related form
* Trochocyathus – tentative report
* Trochus
* Fossilized skeleton found in Alaska of the Late Cretaceous troodontid Troodon †Troodon
** †Troodon formosus
* †Tropites
** †Tropites stantoni – type locality for species
* †Trudopollis
** †Trudopollis meekeri
* †Trypanostylus – tentative report
* †Turanta – tentative report
** †Turanta unica – type locality for species
* Turbo – tentative report
* Turritella – tentative report
* †Tutcheria
** †Tutcheria densestriata

## U

* A
* B
* C
* D
* E
* F
* G
* H
* I
* J
* K
* L
* M
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* Fossilized skeleton found in Alaska of the Late Cretaceous duck-billed dinosaur Ugrunaaluk †Ugrunaaluk – type locality for genus
** †Ugrunaaluk kuukpikensis – type locality for species
* †Unnuakomys – type locality for genus
** †Unnuakomys hutchisoni – type locality for species

## V

* A
* B
* C
* D
* E
* F
* G
* H
* I
* J
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* Vaginulina
* †Valdedorsella – tentative report
** †Valdedorsella whiteavesi – type locality for species
* †Variamusiua – tentative report
* †Vaugonia
** †Vaugonia doroschini
** †Vaugonia imlayi – type locality for species
* †Vermiceras
** †Vermiceras rursicostatum – or unidentified comparable form
* †Vinassaspongus
** †Vinassaspongus erendili
** †Vinassaspongus subsphaericus

## W

* A
* B
* C
* D
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* F
* G
* H
* I
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* †Weyla
** †Weyla unca
* †Witchellia
** †Witchellia sutneroides – type locality for species
* †Wollemanniceras
** †Wollemanniceras alaskanum
** †Wollemanniceras fohlinense
* †Worthenia
** †Worthenia klamathensis
** †Worthenia spp.
* †Wyomingites
** †Wyomingites aplanatus

## X

* A
* B
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* †Xenoceltites
** †Xenoceltites cordilleranus
* †Xenocephalites
** †Xenocephalites hartsocki – type locality for species
** †Xenocephalites vicarius – type locality for species
* †Xenoxylon
** †Xenoxylon latiporosum

## Y

* A
* B
* C
* D
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* F
* G
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* I
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* †Yezoites
** †Yezoites puerculus
** †Yezoites teshionesis

## Z

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* X
* Y
* Z
* †Zetoceras
** †Zetoceras zetes – or unidentified comparable form
* †Zugmayerella
** †Zugmayerella americana
** †Zugmayerella koessensis
** †Zugmayerella ormana
** †Zugmayerella uncinata
* †Zygopleura