List of the prehistoric life of Alaska

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.

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

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.

Fossil of the Silurian-Middle Devonian trilobite Acanthopyge
Mold fossil of a shell of the Early Devonian-Late Triassic bivalve Aviculopecten
Fossil of the Silurian trilobite Calymene blumenbachii
Assemblage of fossils of the Cambrian graptolite Climacograptus
Fossilized shell of the Late Devonian-Permian brachiopod Composita
Restoration of the Cambrian-Middle Devonian nautiloid cephalopod Cyrtoceras
Fossil of the Middle Ordovician graptolite Didymograptus
Fossilized shell of the Silurian-Permian sea snail Euomphalus
Fossil of the Early-Late Ordovician trilobite Geragnostus
Fossil of the Devonian colonial rugose coral Hexagonaria , also known as a Petoskey stone
Fossilized shells of the Middle Ordovician-Permian nautiloid cephalopod Kionoceras
Illustration (lower right, entry 15) of a fossilized shell in front and side views of the Silurian-Late Devonian brachiopod Meristella
Fossils of the Early Devonian graptolite Monograptus
Fossilized shell of the Devonian brachiopod Mucrospirifer
Interior of a fossilized shell of the Early Ordovician-modern marine bivalve Nucula
Fossil of the Cambrian trilobite Paradoxides
Various conodont elements of Polygnathus
Fossil of the primitive Devonian vascular plant Psilophyton
Fossilized shell of the Late Ordovician-Late Triassic brachiopod Spirifer
Assemblage of fossilized shells of the Early Ordovician-Late Devonian probable mollusc Tentaculites
Restoration of the Permian shark Wodnika
Life restoration of the Late Cretaceous dome-headed dinosaur Alaskacephale and inset diagram depicting it with an anachronistic human to scale
Fossilized shells of the Middle Jurassic ammonoid cephalopod Arcticoceras
Fossilized shell of the Middle Jurassic ammonoid cephalopod Cadoceras
Fossilized shell of the Early Jurassic-Early Cretaceous ammonoid cephalopod Calliphylloceras
Fossilized foliage of the Permian-Late Cretaceous fern Cladophlebis
Restoration of the Early Jurassic ammonoid cephalopod Dactylioceras
Restoration of the Late Cretaceous duck-billed dinosaur Edmontosaurus annectens
Restored foliage of the Late Cretaceous-Miocene ginkgo tree Ginkgo adiantoides
Life restoration of the Late Cretaceous toothed bird Hesperornis
Fossilized shell of the Early Jurassic-Late Cretaceous ammonoid cephalopod Lytoceras
Life restoration of the Late Cretaceous tyrannosaur Nanuqsaurus
Exterior of the shell of a modern specimen of the Early Ordovician-modern marine bivalve Nucula
Life restoration of two of the Late Cretaceous horned dinosaur Pachyrhinosaurus perotorum
Leaves and fruit of a living Platanus , or plane tree
Life restoration of the Late Cretaceous dromaeosaurid Saurornitholestes preying upon a multituberculate mammal
Shell of a Spondylus , or spiny oyster
Fossilized skeleton found in Alaska of the Late Cretaceous duck-billed dinosaur Ugrunaaluk
A living Alces , or moose
Life restoration of the Oligocene river dolphin Arktocara
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 .
A living Callorhinus ursinus , or northern fur seal
Fossilized skeleton of the Pliocene-Pleistocene cervid Cervalces , or the stag moose
Shell of a Clinocardium cockle
Fossilized cranium of the Miocene seal Desmatophoca
Shell of an Epitonium wentletrap sea snail
Fossilized foliage of the Cretaceous-Oligocene flowering plant Flabellaria
Side view of a brown-green dugong. It is similar to a manatee, in that the head is pointed downwards, the eyes are small, and the body is stocky. The arms are perpendicular to the body and bend backwards toward the tail. There are no fingernails. The tail is knotched, much like a dolphin tail.
Restorative model of the Pleistocene-Holocene manatee relative Hydrodamalis gigas , or Steller's sea cow
Shells in differing orientation of a Littorina sea snail, or periwinkle
Restoration of a herd of Mammuthus primigenius , or wooly mammoths
Fruit of a living Myrica , or firetree
A living Odobenus rosmarus , or walrus
A living Phoca vitulina , or harbor seal
Montage of photographs in spring (top left), summer (top right), autumn (bottom left), and winter (bottom right) of Populus , or poplar tree
A living Rangifer tarandus , or reindeer
Shell of the whelk sea snail Siphonalia
Living Taxodium distichum , or bald cypresses
A living Vulpes vulpes , or red fox