1. Precambrian

2. Paleozoic
    Selected Paleozoic taxa of Alaska 

3. Mesozoic
    Selected Mesozoic taxa of Alaska 

4. Cenozoic
    Selected Cenozoic taxa of Alaska 

5. References

This list of the prehistoric life of Alaska contains the various prehistoric life-forms whose fossilized remains have been reported from within the US state of Alaska.

Precambrian

The Paleobiology Database records no known occurrences of Precambrian fossils in Alaska.

Paleozoic

Selected Paleozoic taxa of Alaska

• †Abadehella
• †Acanthophyllum
• †Acanthopyge
• †Acmarhachis
• †Agoniatites – tentative report
• †Amplexus
• †Ancyrognathus
• †Anomphalus – tentative report
• †Athyris
  • †Athyris lamellosa – or unidentified related form
• †Atrypa
  • †Atrypa reticularis
• †Aulopora
• †Aviculopecten
  • †Aviculopecten chesterensis – tentative report
  • †Aviculopecten delawarensis – or unidentified related form
  • †Aviculopecten edwardsi – or unidentified related form
  • †Aviculopecten fasciculatus – or unidentified related form
  • †Aviculopecten hardinensis – or unidentified related form
  • †Aviculopecten mccoyi – or unidentified related form
  • †Aviculopecten montpelierensis – or unidentified related form
  • †Aviculopecten occidentalis – or unidentified related form
  • †Aviculopecten similis – or unidentified related form
• † Avonia – tentative report
• †Bailiaspis
• †Bathyuriscus
• †Belemnites – tentative report
• †Bellerophon
  • †Bellerophon chapmani
  • †Bellerophon livengoodensis
  • †Bellerophon spergensis – or unidentified related form
• †Bembexia – tentative report
• †Bimuria
• †Callograptus
• †Calymene
  • †Calymene blumenbachii
  • †Calymene iladon
• †Camarotoechia
  • †Camarotoechia billingsi – or unidentified comparable form
  • †Camarotoechia duplicata – tentative report
  • †Camarotoechia winiskensis – or unidentified comparable form
• Capulus
• †Catenipora
  • †Catenipora jacovikii – or unidentified comparable form
  • †Catenipora robustus – or unidentified comparable form
  • †Catenipora rubra – or unidentified comparable form
• †Cedaria
• †Cheirurus
• †Chirognathus – tentative report
• †Chonetes
  • †Chonetes capax – or unidentified related form
  • †Chonetes illinoisensis – or unidentified related form
  • †Chonetes manitobensis – or unidentified comparable form
  • †Chonetes timanicus – or unidentified related form
  • †Chonetes verneuile – or unidentified comparable form
  • †Chonetes verneuilianus – or unidentified related form
• †Christiania
• †Cladochonus
• †Cladospongia – type locality for genus
• †Cleiothyridina
  • †Cleiothyridina sublamellosa – or unidentified related form
• †Climacograptus
  • †Climacograptus antiquus – or unidentified related form
  • †Climacograptus bicornis
  • †Climacograptus eximius – or unidentified comparable form
  • †Climacograptus hughesi – or unidentified comparable form
  • †Climacograptus indivisus
  • †Climacograptus innotatus
  • †Climacograptus medius
  • †Climacograptus minutus – tentative report
  • †Climacograptus phyllophorus – or unidentified comparable form
  • †Climacograptus pungens
  • †Climacograptus rectangularis
  • †Climacograptus scalaris
  • †Climacograptus stenotelus
  • †Climacograptus trifilis
• †Coenites
• {{multiple image

}} †Composita

• †Composita ambigua – or unidentified comparable form
• †Composita bellula – or unidentified related form

• †Conchidium
• †Conocardium
• †Cordylodus – tentative report
• †Crania
• †Craticula – report made of unidentified related form or using admittedly obsolete nomenclature
• †Cyclonema
• †Cyclopteris – tentative report
• †Cymbidium
• †Cyphaspis
• †Cypricardinia
• †Cyrtoceras
• †Cyrtospirifer
  • †Cyrtospirifer buddingtoni – type locality for species
  • †Cyrtospirifer paridaensis
• †Cystodictya
  • †Cystodictya lineata – or unidentified related form
  • †Cystodictya pustulosa – or unidentified related form
• †Dalmanites
• †Dendrograptus
• †Dentalium
  • †Dentalium hecetaensis
• †Dicoelosia
• †Dictyonema
• {{multiple image

}} †Didymograptus

• †Didymograptus extensus – or unidentified comparable form
• †Didymograptus nitidus – or unidentified comparable form
• †Didymograptus sagitticaulis
• †Didymograptus serratulus

• †Diplograptus
  • †Diplograptus cyperoides – or unidentified comparable form
  • †Diplograptus elongatus
  • †Diplograptus euglyptus
  • †Diplograptus hughesi
  • †Diplograptus inutilis
  • †Diplograptus modestus
  • †Diplograptus mucroterminatus
  • †Diplograptus multidens – or unidentified related form
  • †Diplograptus nicolsoni – or unidentified comparable form
• †Diplopora – tentative report
• †Drepanophycus
• †Edmondia
• † Ella – tentative report
• †Ellesmeroceras
• †Elrathia
• †Emmonsia
• †Eospirifer
• †Epiphyton
• {{multiple image

}} †Euomphalus

• †Euomphalus brooksensis
• †Euomphalus bundtzeni
• †Euomphalus planodorsatus – or unidentified related form
• †Euomphalus planorbis
• †Euomphalus utahensis – or unidentified related form

• †Favosites
  • †Favosites emmonsi – or unidentified comparable form
  • †Favosites hemispericus
  • †Favosites hemisphericus
  • †Favosites limitaris
  • †Favosites radiciformis
• †Fenestella
• †Fletcheria – tentative report
• †Fusulina
• †Gastrioceras
• †Geragnostus
• †Gervillia
• †Girvanella
• †Gomphoceras
• †Goniatites
• †Grewingkia
• †Gypospirifer
  • †Gypospirifer condor
• †Halysites
• †Harpides
• †Harpidium
• †Hedstroemia – tentative report
• †Heliophyllum
• †Hemirhodon
• †Hercynella
• †Hexagonaria
• †Hindeodus
• †Holopea
• †Homagnostus
• †Howittia
• †Icriodus
  • †Icriodus angustoides
  • †Icriodus taimyricus
• †Idiognathodus
• †Isograptus
  • †Isograptus forcipiformis
  • †Isograptus manubriatus – or unidentified comparable form
• †Kionoceras
• †Kootenia
  • †Kootenia anabarensis – or unidentified comparable form
  • †Kootenia granulospinosa – type locality for species
  • †Kootenia serrata – or unidentified comparable form
• †Krausella
• †Lejopyge
  • †Lejopyge laevigata
• †Lichas
• Lima
• †Lingula
• †Lithostrotion
  • †Lithostrotion mclareni
  • †Lithostrotion portlocki – or unidentified related form
  • †Lithostrotion sinuosum
  • †Lithostrotion warreni
• †Lucina
• †Martinia
• †Meristella
  • †Meristella barrisi – or unidentified comparable form
  • †Meristella ceras – or unidentified comparable form
  • †Meristella tumida – tentative report
• †Meristina
• Mesophyllum
• †Michelinoceras – tentative report
• †Microplasma
• †Modiolus – tentative report
• †Monograptus
  • †Monograptus acinaces
  • †Monograptus atavus
  • †Monograptus bohemicus
  • †Monograptus buddingtoni
  • †Monograptus calamistratus
  • †Monograptus clingani – or unidentified related form
  • †Monograptus convolutus
  • †Monograptus crenularis – or unidentified comparable form
  • †Monograptus crinitus
  • †Monograptus cyphus
  • †Monograptus difformis – or unidentified comparable form
  • †Monograptus dubius
  • †Monograptus gregarius
  • †Monograptus incommodus – or unidentified comparable form
  • †Monograptus involutus – or unidentified comparable form
  • †Monograptus nilssoni
  • †Monograptus noyesensis
  • †Monograptus pacificus
  • †Monograptus praedubius – or unidentified related form
  • †Monograptus priodon
  • †Monograptus pseudodubius
  • †Monograptus raitzhainesis – or unidentified related form
  • †Monograptus revolutus
  • †Monograptus scanicus
  • †Monograptus tenuis
  • †Monograptus thomasi – or unidentified related form
  • †Monograptus tumescens
  • †Monograptus uncinatus
  • †Monograptus undulatus
  • †Monograptus varians
  • †Monograptus vulgaris – or unidentified comparable form
  • †Monograptus yukonensis
• †Morania
• †Mucrospirifer
  • †Mucrospirifer refugiensis – type locality for species
• †Murchisonia
• {{multiple image

}} †Naticopsis

• †Naticopsis bowsheri
• †Naticopsis carleyana – or unidentified related form
• †Naticopsis suturicompta

• †Neogondolella
• †Neospirifer
  • †Neospirifer cameratus
  • †Neospirifer fasciger – or unidentified related form
  • †Neospirifer striatus – tentative report
• †Nowakia
• Nucula
  • †Nucula shumardiana – or unidentified related form
• †Oncagnostus
  • †Oncagnostus tumidosus
• †Oonoceras
• †Orthoceras
  • †Orthoceras anguliferas – or unidentified comparable form
• †Oulodus
• †Ozarkodina
  • †Ozarkodina confluens
  • †Ozarkodina eberleini – type locality for species
  • †Ozarkodina paucidentata – or unidentified comparable form
• †Pagetia
• †Panenka
• {{multiple image

}} †Paradoxides

• †Parafusulina – tentative report
• †Pecopteris
  • †Pecopteris arborescens
  • †Pecopteris hemitelioides
  • †Pecopteris unita
• †Pentamerus
• †Peronopsis
• †Phalagnostus
• †Phillipsia
• †Phyllograptus
• †Pinna
• †Platyceras
• †Platycrinites
• Pleurotomaria
• †Polygnathus
  • †Polygnathus alexanderensis
  • †Polygnathus angusticostatus
  • †Polygnathus angustipennatus
  • †Polygnathus aspelundi
  • †Polygnathus borealis
  • †Polygnathus brevis
  • †Polygnathus churkini
  • †Polygnathus costatus
  • †Polygnathus eberleini
  • †Polygnathus eiflius
  • †Polygnathus inversus
  • †Polygnathus kennettensis
  • †Polygnathus linguiformis
  • †Polygnathus pacificus
  • †Polygnathus parawebbi
  • †Polygnathus perbonus – or unidentified related form
  • †Polygnathus praetrigonicus
  • †Polygnathus pseudofoliatus
  • †Polygnathus robusticostatus
  • †Polygnathus samueli
  • †Polygnathus sinuosus
  • †Polygnathus trigonicus
  • †Polygnathus unicornis
  • †Polygnathus xylus
• †Prodentalium
• †Proetus
• †Prohedinia
• †Pseudoamplexus
• †Pseudobornia
  • †Pseudobornia ursina
• †Pseudomelania
• †Psilophyton
• †Pteria – report made of unidentified related form or using admittedly obsolete nomenclature
• †Ptychagnostus
• †Pugnax
• †Receptaculites
• †Rhynchonella
• †Rothpletzella
• † Sarcinula
• †Schwagerina
• †Sinutropis
• †Skenidioides
• †Solenopora
  • †Solenopora compacta
  • †Solenopora filiformis
• † Solenopsis – tentative report
• †Sowerbyella
• †Spathognathodus
• †Sphaerina
• †Sphaerocodium
• †Spirifer
  • †Spirifer schellwieni – or unidentified related form
• †Spiriferina
  • †Spiriferina panderi – or unidentified related form
• Spirorbis
• †Spyroceras
• †Stringocephalus
• †Strophomena
• †Syringopora
• †Taeniocrada
• †Teganium
• †Tentaculites
• †Tetradium
• †Tetragraptus
• †Triarthrus
• †Uraloceras
  • †Uraloceras burtiense
  • †Uraloceras fedorowi
  • †Uraloceras involutum
  • †Uraloceras nevadense
• †Westergaardodina
• †Wodnika
• †Zacanthoides

Mesozoic

Selected Mesozoic taxa of Alaska

• †Actinoceramus
• †Alaskacephale – type locality for genus
  • †Alaskacephale gangloffi – type locality for species
• †Amaltheus
• †Amblydactylus
• †Amoeboceras
• Amusium
• †Anagaudryceras
  • †Anagaudryceras auranium
  • †Anagaudryceras aurarium
  • †Anagaudryceras inflatus
  • †Anagaudryceras sacya – type locality for species
• †Anapachydiscus
  • †Anapachydiscus nelchinensis – type locality for species
• †Anatomites
• †Anomia
• †Arcestes
• †Archaeocidaris – tentative report
• †Arcthoplites
• Arctica – tentative report
• †Arcticoceras
• †Arctocephalites
  • †Arctocephalites alticostus
  • †Arctocephalites costidensus – type locality for species
  • †Arctocephalites pompeckji
• †Arctoceras
• †Arieticeras
• †Arnioceras
• †Arpadites – tentative report
• †Aspenites
• Astarte
• †Asthenoceras
• †Aviculopecten
• †Baculites
• †Belemnites
• †Bradfordia
• †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
• †Calliphylloceras
  • †Calliphylloceras aldersoni – or unidentified comparable form
  • †Calliphylloceras freibrocki – type locality for species
  • †Calliphylloceras nizinanum – type locality for species
• †Calycoceras
• Capulus – tentative report
• Cardinia
• Cardita – tentative report
• †Cenoceras
• †Ceratites
• Cerithium – tentative report
• Chlamys
• †Chondrites – tentative report
• †Chonetes – tentative report
• Cidaris – tentative report
• †Cimolodon
• Cladophlebis
  • †Cladophlebis hirta – tentative report
• †Claraia
  • †Claraia stachei
• †Cleoniceras
• †Collonia
• †Corum
• †Cosmonautilus – tentative report
• †Ctenophyllum
• †Cylindroteuthis
• †Dactylioceras
  • †Dactylioceras commune – or unidentified comparable form
• †Daonella
• †Daxatina
• †Dentalium
• †Desmoceras
• †Desmophyllites
• †Didymoceras
  • †Didymoceras hornbyense – or unidentified related form
• †Docidoceras
  • †Docidoceras camachoi – type locality for species
  • †Docidoceras longalvum – or unidentified related form
  • †Docidoceras paucinodosum – type locality for species
• †Douvilleiceras
• †Dromaeosaurus
  • †Dromaeosaurus albertensis
• {{multiple image

}} †Edmontonia

• †Edmontosaurus – or unidentified related form
  • †Edmontosaurus saskatchewanensis
• †Ellisonia
• †Epigondolella
• †Euaptetoceras
• †Eubostrychoceras
• †Eudmetoceras
• †Euomphaloceras
• †Euomphalus
• †Fresvillia
• †Gaudryceras
• †Germanonautilus
• †Gervillia
• Ginkgo
  • {{multiple image

}} †Ginkgo adiantoides - or unidentified loosely related form

• Gleichenia
• †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
• Guttulina
• †Gymnocodium
• †Hamulus – tentative report
• †Hebetoxyites
• {{multiple image

}} †Hesperornis

• †Heterastridium
• †Hildaites – tentative report
• †Hypophylloceras
• †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
• †Isastrea – tentative report
• Isognomon – tentative report
• †Joannites
• †Kepplerites
• †Kosmoceras
  • †Kosmoceras spinosum – or unidentified comparable form
• Lima
• †Lobites
• †Lucina
• †Lytoceras
  • †Lytoceras eudesianum – or unidentified related form
  • †Lytoceras fimbriatum – or unidentified comparable form
• Margarites
• †Meekoceras
  • †Meekoceras gracilitatis
• †Metapolygnathus
• Milax – tentative report
• Milax
• †Modiolus
• †Muramotoceras
• †Murchisonia – tentative report
• †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
• †Mytilus
• †Nanuqsaurus – type locality for genus
  • †Nanuqsaurus hoglundi – type locality for species
• Natica
• †Neogondolella
• †Neophylloceras
  • †Neophylloceras hetonaiense
  • †Neophylloceras ramosum
  • †Neophylloceras seresitense
• †Neospathodus – report made of unidentified related form or using admittedly obsolete nomenclature
• Nerita – tentative report
• Neritopsis
• Nucula
  • †Nucula percrassa – or unidentified related form
• †Ophiceras
• Ostrea
• †Otoscaphites
• †Owenites
  • †Owenites koeneni – or unidentified comparable form
• †Oxycerites
• †Oxytoma
• †Pachydiscus
  • †Pachydiscus hazzardi – type locality for species
  • †Pachydiscus kamishakensis – type locality for species
  • †Pachydiscus obsoletiformis – type locality for species
  • †Pachydiscus ootacodensis
• †Pachyrhinosaurus
  • †Pachyrhinosaurus perotorum – type locality for species
• †Pagiophyllum
• Panopea
• †Parkinsonia – tentative report
• Patella – tentative report
• †Pecten
• †Peregrinella
• Pholadomya
• †Phylloceras
• †Phyllopachyceras
  • †Phyllopachyceras chitinanum – type locality for species
  • †Phyllopachyceras forbesianum
  • †Phyllopachyceras shastalense – or unidentified comparable form
• †Pinna
• † Plagiostoma
• †Planolites – tentative report
• Platanus
• †Platyceras
• †Pleuroacanthites
• †Pleuronautilus
• Pleurotomaria
• Plicatula
• †Posidonia
• †Procerites
• †Protocardia
• †Protrachyceras
• †Pseudomelania – tentative report
• †Pseudotoites
• †Pteria
• †Pterophyllum
• †Puzosia
  • †Puzosia alaskana – type locality for species
• †Reineckeites
• †Rhynchonella
• †Sagenopteris – tentative report
• †Saurexallopus
• †Saurornitholestes
  • †Saurornitholestes langstoni
• †Saxoceras – tentative report
• †Scaphites
• Scurria – tentative report
• Serpula
• †Sirenites
• Solecurtus – tentative report
• Solemya – tentative report
• †Solenopora
• †Sphenobaiera
  • †Sphenobaiera biloba - or unidentified loosely related form
  • †Sphenobaiera czekanowskiana - or unidentified loosely related form
  • †Sphenobaiera longifolia - or unidentified loosely related form
• †Spiriferina
  • †Spiriferina borealis – tentative report
  • †Spiriferina yukonensis – type locality for species
• †Spirocyclina – tentative report
• Spondylus – tentative report
• Terebratula
• Teredolites
• †Thamnasteria
• Thracia
• †Trichites – report made of unidentified related form or using admittedly obsolete nomenclature
• †Trigonia
• Trochus
• †Troodon
  • †Troodon formosus
• Turbo – tentative report
• Turritella – tentative report
• †Tutcheria
• †Ugrunaaluk – type locality for genus
  • †Ugrunaaluk kuukpikensis – type locality for species
• †Vermiceras
• †Worthenia
• †Wyomingites
• †Xenoceltites
  • †Xenoceltites cordilleranus
• †Xenocephalites
  • †Xenocephalites hartsocki – type locality for species
  • †Xenocephalites vicarius – type locality for species
• †Yezoites
• †Zetoceras

Cenozoic

Selected Cenozoic taxa of Alaska

This list of the Cenozoic 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 66 million and 10,000 years of age.

• Acanthocardia
• Acirsa
• Acmaea
• Agonum
• †Ainus
• Alces
• Alnus
• Alopex
  • †Alopex lagopus
• Alvania
• Amara
• Amauropsis
• Ancistrolepis
• Angulus
• †Anomalosipho – tentative report
• Anomia – tentative report
• Aphaenogaster
• Arca
• Arctica
• {{multiple image

}} †Arctodus

• †Arctodus simus

• Argobuccinum
• †Arktocara – type locality for genus
  • †Arktocara yakataga – type locality for species
• Asaphidion
• Asinus
• Astarte
  • †Astarte borealis
• Astrangia
• †Aturia
• Balanus
  • †Balanus balanoides
  • †Balanus balanus
  • †Balanus crenatus
  • †Balanus nubilus – or unidentified comparable form
• Bembidion
• Beringius
  • †Beringius crebricostatus
• Betula
• Bibio
• Bison
  • {{multiple image

}} †Bison priscus

• †Bootherium
  • †Bootherium bombifrons
• Boreotrophon
  • †Boreotrophon rotundatus – or unidentified comparable form
• Brachidontes
• †Branchioplax
  • †Branchioplax washingtoniana
• Buccella
• Buccinum
  • †Buccinum angulosum
  • †Buccinum glaciale
• Bulbus
  • †Bulbus fragilis
• Cadulus
• Calliostoma
• Callorhinus
  • {{multiple image

}} †Callorhinus ursinus

• Calyptraea
• Camponotus
• Cancellaria
• Canis
  • †Canis lupus
• Carabus
  • †Carabus nemoralis – or unidentified comparable form
  • †Carabus truncaticollis – or unidentified comparable form
• †Carex
• Caryophyllia
• Cassidulina
• Castalia
• Castanea
• Cepheus
• †Cervalces
• Cervus
  • †Cervus elaphus
• Ceutorhynchus – tentative report
• Chama
• Chione
• Chlamys
  • †Chlamys islandica
  • †Chlamys rubida
• †Chrysodomus – tentative report
• Chrysolina
• Cibicides
• Cingula
• Clinocardium
  • †Clinocardium nuttallii
• Colus
• Corbicula
• Corbula
• †Cornwallius
• †Corylus
• Crenella
• Crepidula
• Cryptonatica
  • †Cryptonatica affinis
• Cyclocardia
• Cylichna
• Cyperus
• {{multiple image

}} Delphinapterus – tentative report

• Dentalium
• †Desmatophoca – tentative report
• Diacheila
• Dicrostonyx
• Dioon
• Dyschirius
• Echinarachnius
• Echinophoria
• Elphidium
• Enhydra
• Enicmus
• †Epipremnum
• Epitonium
• Equus
  • †Equus alaskae
• Erignathus
  • †Erignathus barbatus
• Erigone
• Eschrichtius
• Eumetopias
• †Eumorphocorystes
• Euspira
  • †Euspira pallida
• Evalea
• †Exilia – tentative report
• †Flabellaria
• Fulgoraria
• Gari
• Georissus
• Globigerina
  • †Globigerina bulloides – or unidentified related form
• Glycymeris
• Helophorus
• Hiatella
  • †Hiatella arctica
• Hinnites – tentative report
• Histriophoca
  • †Histriophoca fasciata
• Homalopoma – tentative report
• †Hydrodamalis
  • †Hydrodamalis gigas
• Isurus
• †Kolponomos – or unidentified comparable form
• Lasiopodomys
• Lathrobium
• Laurus
• Leistus
• Lemmus
  • †Lemmus sibiricus
• Leptothorax
• Leukoma
• Limatula
• Liocyma
  • †Liocyma fluctuosa
• Liomesus
• Littorina
• †Lora
• Lunatia
• Lyonsia
• Macoma
  • †Macoma balthica – or unidentified related form
• Macrocallista – tentative report
• {{multiple image

}} Magnolia

• †Mammut
• †Mammuthus
  • †Mammuthus primigenius
• Margarites
• Marmota
• Martesia – tentative report
• Mathilda
• Messor
• †Metacarcinus
• Micropeplus
• Microtus
• Modiolus
• Musculus
  • †Musculus niger
• †Mya
  • †Mya arenaria – or unidentified comparable form
  • †Mya truncata
• Myrica
• Mytilus
  • †Mytilus edulis
• Natica
• Nebria
• Neoconorbina
• Neptunea
  • †Neptunea heros
  • †Neptunea lyrata
  • †Neptunea ventricosa
• Neverita
• Notiophilus
• Nucula
• Ochotona
  • †Ochotona whartoni
• Odobenus
  • †Odobenus rosmarus
• Oenopota
  • †Oenopota candida
• †Osmunda
• Ostrea
• Ovibos
  • {{multiple image

}} †Ovibos moschatus

• Ovis
  • †Ovis dalli – tentative report
• †Oxytoma
• Pagophilus
• Palliolum
• Pandora
• Papyridea
• Patrobus
• †Perse
• Phenacomys
• Phoca
  • †Phoca hispida
  • †Phoca vitulina
• Picea
  • †Picea glauca
  • †Picea mariana
  • †Picea sitchensis – or unidentified comparable form
• Pinus
  • †Pinus monticola
• Pitar
• †Planera
• Plicifusus
  • †Pododesmus macrochisma
• Polinices
• Populus
• Portlandia
• †Portunites
• †Predicrostonyx
  • †Predicrostonyx hopkinsi
• †Protocardia – tentative report
• †Protochelydra
  • †Protochelydra zangerli – or unidentified comparable form
• Protothaca
• Pteris
• Pterostichus
• Puncturella
  • †Puncturella longifissa
• Purpura
• Pusa – or unidentified related form
  • †Pusa hispida
• Pyrgo
• Pyrulofusus
• Quercus
• Quinqueloculina
• Rangifer
  • {{multiple image

}} †Rangifer tarandus

• Rhabdus
• Rosalina
• †Rotalia
• Saiga
• Saxidomus
• Scaphander
  • †Scaphander lignarius – or unidentified comparable form
• †Scutella
• Sequoia
• Serripes
  • †Serripes groenlandicus
• Siliqua
• Siphonalia
• Sorex
• Spermophilus
  • †Spermophilus undulatus
• Spirorbis
• Spirotropis
• Spisula
• Stenus
• Strongylocentrotus
  • †Strongylocentrotus droebachiensis
• †Symphoricarpos
• Tachyrhynchus
  • †Tachyrhynchus erosus
• Taxodium
  • †Taxodium distichum
• Tellina
• Terebratula
• Thracia
• Thyasira
• Tonicella
• Trichotropis
  • †Trichotropis bicarinata
• †Tsuga
  • †Tsuga heterophylla
• Turritella
• Ulmus
• Ursus
• †Vaccinium
• Venericardia
• Vitis
• Volutopsius
• Vulpes
  • †Vulpes vulpes
• Xysticus
• Yoldia

References

• {{cite web |title=Fossilworks: Gateway to the Paleobiology Database |author=Various Contributors to the Paleobiology Database |url=http://fossilworks.org/ |accessdate=7 August 2017}}

• Isotopes of thallium
• Isotopes of thorium
• Isotopes of thulium
• Isotopes of tin
• Isotopes of titanium
• Isotopes of tungsten
• Isotopes of uranium
• Isotopes of vanadium
• Isotopes of xenon
• Isotopes of ytterbium
• Isotopes of yttrium
• Isotopes of zinc
• Isotopes of zirconium
• Isotopes Park
• Isotope table
• Isotopic
• Isotopic abundances
• Isotopic Abundances
• Isotopic dating
• Isotopic Fractionation
• Isotopic fractionation
• Isotopic labeling
• Isotopic spin
• Isotopic Tracer
• Isotopic tracer