List of the prehistoric life of Alaska facts for kids

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
• 

  Fossil of the Silurian-Middle Devonian trilobite Acanthopyge
  †Acanthopyge
• †Acmarhachis
• †Agoniatites – tentative report
• †Amplexus
• †Ancyrognathus
• †Anomphalus – tentative report
• †Athyris
  • †Athyris lamellosa – or unidentified related form
• †Atrypa
  • †Atrypa reticularis
• †Aulopora
• 

  Mold fossil of a shell of the Early Devonian-Late Triassic bivalve Aviculopecten
  †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
  • 

    Fossil of the Silurian trilobite Calymene blumenbachii
    †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
• 

  Assemblage of fossils of the Cambrian graptolite Climacograptus
  †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
• 

  Fossilized shell of the Late Devonian-Permian brachiopod Composita
  †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
• 

  Restoration of the Cambrian-Middle Devonian nautiloid cephalopod Cyrtoceras
  †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
• 

  Fossil of the Middle Ordovician graptolite Didymograptus
  †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
• 

  Fossilized shell of the Silurian-Permian sea snail Euomphalus
  †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
• 

  Fossil of the Early-Late Ordovician trilobite Geragnostus
  †Geragnostus
• †Gervillia
• †Girvanella
• †Gomphoceras
• †Goniatites
• †Grewingkia
• †Gypospirifer
  • †Gypospirifer condor
• †Halysites
• †Harpides
• †Harpidium
• †Hedstroemia – tentative report
• †Heliophyllum
• †Hemirhodon
• †Hercynella
• 

  Fossil of the Devonian colonial rugose coral Hexagonaria, also known as a Petoskey stone
  †Hexagonaria
• †Hindeodus
• †Holopea
• †Homagnostus
• †Howittia
• †Icriodus
  • †Icriodus angustoides
  • †Icriodus taimyricus
• †Idiognathodus
• †Isograptus
  • †Isograptus forcipiformis
  • †Isograptus manubriatus – or unidentified comparable form
• 

  Fossilized shells of the Middle Ordovician-Permian nautiloid cephalopod Kionoceras
  †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
• 

  Illustration (lower right, entry 15) of a fossilized shell in front and side views of the Silurian-Late Devonian brachiopod Meristella
  †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
• 

  Fossils of the Early Devonian graptolite Monograptus
  †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
• 

  Fossilized shell of the Devonian brachiopod Mucrospirifer
  †Mucrospirifer
  • †Mucrospirifer refugiensis – type locality for species
• †Murchisonia
• †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
• 

  Interior of a fossilized shell of the Early Ordovician-modern marine bivalve Nucula
  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
• 

  Fossil of the Cambrian trilobite Paradoxides
  †Paradoxides
• †Parafusulina – tentative report
• †Pecopteris
  • †Pecopteris arborescens
  • †Pecopteris hemitelioides
  • †Pecopteris unita
• †Pentamerus
• †Peronopsis
• †Phalagnostus
• †Phillipsia
• †Phyllograptus
• †Pinna
• †Platyceras
• †Platycrinites
• Pleurotomaria
• 

  Various conodont elements of Polygnathus
  †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
• 

  Fossil of the primitive Devonian vascular plant Psilophyton
  †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
• 

  Fossilized shell of the Late Ordovician-Late Triassic brachiopod Spirifer
  †Spirifer
  • †Spirifer schellwieni – or unidentified related form
• †Spiriferina
  • †Spiriferina panderi – or unidentified related form
• Spirorbis
• †Spyroceras
• †Stringocephalus
• †Strophomena
• †Syringopora
• †Taeniocrada
• †Teganium
• 

  Assemblage of fossilized shells of the Early Ordovician-Late Devonian probable mollusc Tentaculites
  †Tentaculites
• †Tetradium
• †Tetragraptus
• †Triarthrus
• †Uraloceras
  • †Uraloceras burtiense
  • †Uraloceras fedorowi
  • †Uraloceras involutum
  • †Uraloceras nevadense
• †Westergaardodina
• 

  Restoration of the Permian shark Wodnika
  †Wodnika
• †Zacanthoides

Mesozoic

Selected Mesozoic taxa 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.

• †Actinoceramus
• 

  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
• †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
• 

  Fossilized shells of the Middle Jurassic ammonoid cephalopod Arcticoceras
  †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
• 

  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
• †Calycoceras
• Capulus – tentative report
• Cardinia
• Cardita – tentative report
• †Cenoceras
• †Ceratites
• Cerithium – tentative report
• Chlamys
• †Chondrites – tentative report
• †Chonetes – tentative report
• Cidaris – tentative report
• †Cimolodon
• 

  Fossilized foliage of the Permian-Late Cretaceous fern Cladophlebis
  Cladophlebis
  • †Cladophlebis hirta – tentative report
• †Claraia
  • †Claraia stachei
• †Cleoniceras
• †Collonia
• †Corum
• †Cosmonautilus – tentative report
• †Ctenophyllum
• †Cylindroteuthis
• 

  Restoration of the Early Jurassic ammonoid cephalopod Dactylioceras
  †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
• †Edmontonia
• 

  Restoration of the Late Cretaceous duck-billed dinosaur Edmontosaurus annectens
  †Edmontosaurus – or unidentified related form
  • †Edmontosaurus saskatchewanensis
• †Ellisonia
• †Epigondolella
• †Euaptetoceras
• †Eubostrychoceras
• †Eudmetoceras
• †Euomphaloceras
• †Euomphalus
• †Fresvillia
• †Gaudryceras
• †Germanonautilus
• †Gervillia
• Ginkgo
  • 

    Restored foliage of the Late Cretaceous-Miocene ginkgo tree Ginkgo adiantoides
    †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
• 

  Life restoration of the Late Cretaceous toothed bird Hesperornis
  †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
• 

  Fossilized shell of the Early Jurassic-Late Cretaceous ammonoid cephalopod Lytoceras
  †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
• 

  Life restoration of the Late Cretaceous tyrannosaur Nanuqsaurus
  †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
• 

  Exterior of the shell of a modern specimen of the Early Ordovician-modern marine bivalve Nucula
  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
• 

  Life restoration of two of the Late Cretaceous horned dinosaur Pachyrhinosaurus perotorum
  †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
• 

  Leaves and fruit of a living Platanus, or plane tree
  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
• 

  Life restoration of the Late Cretaceous dromaeosaurid Saurornitholestes preying upon a multituberculate mammal
  †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
• 

  Shell of a Spondylus, or spiny oyster
  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
• 

  Fossilized skeleton found in Alaska of the Late Cretaceous duck-billed dinosaur Ugrunaaluk
  †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
• 

  A living Alces, or moose
  Alces
• Alnus
• Alopex
  • †Alopex lagopus
• Alvania
• Amara
• Amauropsis
• Ancistrolepis
• Angulus
• †Anomalosipho – tentative report
• Anomia – tentative report
• Aphaenogaster
• Arca
• Arctica
• †Arctodus
  • †Arctodus simus
• Argobuccinum
• 

  Life restoration of the Oligocene river dolphin Arktocara
  †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
  • 

    Mummified specimen found in Alaska of the Pleistocene-Holocene Bison priscus, or steppe bison. This specimen, known as "Blue Babe" after the blue ox of Paul Bunyan folklore, derives its unusual coloration from a chemical reaction between the phosphorus in its skin and iron in the surrounding soil to produce a coating of vivianite.
    †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
  • 

    A living Callorhinus ursinus, or northern fur seal
    †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
• 

  Fossilized skeleton of the Pliocene-Pleistocene cervid Cervalces, or the stag moose
  †Cervalces
• Cervus
  • †Cervus elaphus
• Ceutorhynchus – tentative report
• Chama
• Chione
• Chlamys
  • †Chlamys islandica
  • †Chlamys rubida
• †Chrysodomus – tentative report
• Chrysolina
• Cibicides
• Cingula
• 

  Shell of a Clinocardium cockle
  Clinocardium
  • †Clinocardium nuttallii
• Colus
• Corbicula
• Corbula
• †Cornwallius
• †Corylus
• Crenella
• Crepidula
• Cryptonatica
  • †Cryptonatica affinis
• Cyclocardia
• Cylichna
• Cyperus
• Delphinapterus – tentative report
• Dentalium
• 

  Fossilized cranium of the Miocene seal Desmatophoca
  †Desmatophoca – tentative report
• Diacheila
• Dicrostonyx
• Dioon
• Dyschirius
• Echinarachnius
• Echinophoria
• Elphidium
• Enhydra
• Enicmus
• †Epipremnum
• 

  Shell of an Epitonium wentletrap sea snail
  Epitonium
• Equus
  • †Equus alaskae
• Erignathus
  • †Erignathus barbatus
• Erigone
• Eschrichtius
• Eumetopias
• †Eumorphocorystes
• Euspira
  • †Euspira pallida
• Evalea
• †Exilia – tentative report
• 

  Fossilized foliage of the Cretaceous-Oligocene flowering plant Flabellaria
  †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
  • 

    Restorative model of the Pleistocene-Holocene manatee relative Hydrodamalis gigas, or Steller's sea cow
    †Hydrodamalis gigas
• Isurus
• †Kolponomos – or unidentified comparable form
• Lasiopodomys
• Lathrobium
• Laurus
• Leistus
• Lemmus
  • †Lemmus sibiricus
• Leptothorax
• Leukoma
• Limatula
• Liocyma
  • †Liocyma fluctuosa
• Liomesus
• 

  Shells in differing orientation of a Littorina sea snail, or periwinkle
  Littorina
• †Lora
• Lunatia
• Lyonsia
• Macoma
  • †Macoma balthica – or unidentified related form
• Macrocallista – tentative report
• Magnolia
• †Mammut
• †Mammuthus
  • 

    Restoration of a herd of Mammuthus primigenius, or wooly mammoths
    †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
• 

  Fruit of a living Myrica, or firetree
  Myrica
• Mytilus
  • †Mytilus edulis
• Natica
• Nebria
• Neoconorbina
• Neptunea
  • †Neptunea heros
  • †Neptunea lyrata
  • †Neptunea ventricosa
• Neverita
• Notiophilus
• Nucula
• Ochotona
  • †Ochotona whartoni
• Odobenus
  • 

    A living Odobenus rosmarus, or walrus
    †Odobenus rosmarus
• Oenopota
  • †Oenopota candida
• †Osmunda
• Ostrea
• Ovibos
  • †Ovibos moschatus
• Ovis
  • †Ovis dalli – tentative report
• †Oxytoma
• Pagophilus
• Palliolum
• Pandora
• Papyridea
• Patrobus
• †Perse
• Phenacomys
• Phoca
  • †Phoca hispida
  • 

    A living Phoca vitulina, or harbor seal
    †Phoca vitulina
• Picea
  • †Picea glauca
  • †Picea mariana
  • †Picea sitchensis – or unidentified comparable form
• Pinus
  • †Pinus monticola
• Pitar
• †Planera
• Plicifusus
  • †Pododesmus macrochisma
• Polinices
• 

  Montage of photographs in spring (top left), summer (top right), autumn (bottom left), and winter (bottom right) of Populus, or poplar tree
  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
  • 

    A living Rangifer tarandus, or reindeer
    †Rangifer tarandus
• Rhabdus
• Rosalina
• †Rotalia
• Saiga
• Saxidomus
• Scaphander
  • †Scaphander lignarius – or unidentified comparable form
• †Scutella
• Sequoia
• Serripes
  • †Serripes groenlandicus
• Siliqua
• 

  Shell of the whelk sea snail Siphonalia
  Siphonalia
• Sorex
• Spermophilus
  • †Spermophilus undulatus
• Spirorbis
• Spirotropis
• Spisula
• Stenus
• Strongylocentrotus
  • †Strongylocentrotus droebachiensis
• †Symphoricarpos
• Tachyrhynchus
  • †Tachyrhynchus erosus
• Taxodium
  • 

    Living Taxodium distichum, or bald cypresses
    †Taxodium distichum
• Tellina
• Terebratula
• Thracia
• Thyasira
• Tonicella
• Trichotropis
  • †Trichotropis bicarinata
• †Tsuga
  • †Tsuga heterophylla
• Turritella
• Ulmus
• Ursus
• †Vaccinium
• Venericardia
• Vitis
• Volutopsius
• Vulpes
  • 

    A living Vulpes vulpes, or red fox
    †Vulpes vulpes
• Xysticus
• Yoldia