State | Age | Common name | Binomial nomenclature | Image | Year & Citation |
---|---|---|---|---|---|
Alabama | Eocene | Basilosaurus whale |
Basilosaurus cetoides |
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1984[1] |
Alaska | Pleistocene | Woolly Mammoth | Mammuthus primigenius |
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|
Arizona | Triassic | petrified wood |
Araucarioxylon arizonicum |
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|
California | Pleistocene | Saber-toothed cat |
Smilodon fatalis |
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|
Colorado | Jurassic | Stegosaurus | Stegosaurus stenops |
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1982 |
Connecticut | Jurassic | dinosaur tracks |
Eubrontes giganteus |
||
Delaware | Cretaceous | Belemnite | Belemnitella americana |
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|
Washington, D.C. |
Cretaceous | “Capitalsaurus”
(state dinosaur) |
nomen nudum only |
||
Florida | Eocene | agatized coral (state stone) |
Cnidaria, Anthozoa |
||
Georgia | Cretaceous–
Miocene |
shark tooth | undetermined | ![]() |
|
Idaho | Pliocene | Hagerman horse | Equus simplicidens |
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|
Illinois | Pennsylvanian | Tully Monster | Tullimonstrum gregarium |
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|
Kentucky | Ordovician–
Pennsylvanian |
brachiopod | undetermined | ![]() |
1986[2] |
Louisiana | Oligocene | petrified palmwood | Palmoxylon | ||
Maine | Devonian | Pertica plant | Pertica quadrifaria |
||
Maryland | Miocene | murex snail / gastropod |
Ecphora gardnerae gardnerae |
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|
Massachusetts | Jurassic | dinosaur tracks |
undetermined | ||
Michigan | Holocene | American mastodon |
Mammut americanum |
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|
Mississippi | Eocene | Basilosaurus
and Zygorhiza whales |
Basilosaurus cetoides Zygorhiza kochii |
||
Missouri | Pennsylvanian | Sea lily | Delocrinus missouriensis |
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1989 |
Montana | Cretaceous | Duck-billed dinosaur |
Maiasaura peeblesorum |
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|
Nebraska | Pleistocene | Woolly Mammoth
Columbian Mammoth Imperial |
Mammuthus primigenius Mammuthus columbi Mammuthus imperator |
||
Nevada | Triassic | Shonisaurus | Shonisaurus popularis |
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|
New Jersey |
Cretaceous | duck-billed dinosaur |
Hadrosaurus foulkii |
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|
New Mexico |
Triassic | Coelophysis | Coelophysis bauri |
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|
New York | Silurian | sea scorpion | Eurypterus remipes | ![]() |
1984 |
North Dakota |
Paleocene | shipworm-bored
petrified wood |
Teredo petrified wood |
||
Ohio | Ordovician | trilobite | Isotelus maximus |
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1985 |
Oklahoma | Jurassic | Saurophaganax | Saurophaganax maximus |
||
Oregon | Eocene | Dawn redwood |
Metasequoia
occidentalis |
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2005 |
Pennsylvania | Devonian | trilobite | Phacops rana |
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1988 |
South Dakota |
Cretaceous | Triceratops | Triceratops horridus |
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|
Tennessee | Cretaceous | bivalve | Pterotrigonia thoracica |
||
Texas | Cretaceous | Pleurocoelus
(state dinosaur) |
Pleurocoelus nanus |
||
Utah | Jurassic | Allosaurus | Allosaurus fragilis |
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1988[3] |
Vermont | Pleistocene | Beluga whale |
Delphinapterus leucas |
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1993 |
Virginia | Caenozoic | scallop | Chesapecten jeffersonius |
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1993 |
Washington | Pleistocene | Columbian Mammoth |
Mammuthus columbi |
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1998[4] |
West Virginia |
Late Pleistocene |
Jefferson’s ground sloth |
Megalonyx jeffersonii |
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2008[5] |
Wisconsin | Ordovician–
Silurian |
trilobite | Calymene celebra |
1985 | |
Wyoming | Eocene | Knightia | Knightia | ![]() |
1987 |