Official State Dinosaurs and Fossils

Your State's Official Dinosaur or Fossil

Fossil trilobites

Daderot / Wikimedia Commons / Public Domain

Do you know the official state dinosaur and fossil for the state you live in?

State fossils or state dinosaurs have been named by 42 of the 50 states. Maryland, Missouri, Oklahoma and Wyoming have named one of each, while Kansas has named both an official marine and flying fossil. Three states -- Georgia, Oregon and Vermont -- have fossils of non-extinct species. There is also the informally named but formally designated "Capitalsaurus" of Washington, D.C. 

The state fossils make a much more consistent list than the state rocks, state minerals and state gemstones. Most are distinct creatures identified by species. On the other hand, some of the dinosaurs are honored as state fossils rather than state dinosaurs. 

Dinosaurs and Fossils by State

The "Adoption Date" lists the date that these were adopted as state symbols. The link usually goes to the best existing material from the respective state government or educational institution. You can look up each of the geologic age terms in the geologic time scale

State Scientific Name Common Name (age) Adoption Date
Alabama Basilosaurus cetoides Whale (Eocene) 1984
Alaska Mammuthus primigenius Mammoth (Pleistocene) 1986
Arizona Araucarioxylon arizonicum Petrified Wood (Triassic) 1988
California Smilodon californicus Saber-toothed cat (Quaternary) 1973
Colorado Stegosaurus Stegosaurus (Cretaceous) 1982
Connecticut Eubrontes giganteus Dinosaur Track (Jurassic) 1991
Deleware Belemnitalla americana Belemnite (Cretaceous) 1996
Georgia Shark tooth (Cenozoic) 1976
Idaho Equus simplicidens Hagerman horse (Pliocene) 1988
Illinois Tullimonstrum gregarium Tully Monster (Carboniferous) 1989
Kansas

Pteranodon

Tylosaurus

Pterosaur (Cretaceous)

Mosasaur (Cretaceous)

2014

2014

Kentucky Brachiopod (Paleozoic) 1986
Louisiana Palmoxylon Petrified Palm wood (Cretaceous) 1976
Maine

Pertica quadrifaria

Fern-like plant (Devonian) 1985
Maryland

Astrodon johnstoni

Ecphora gardnerae

Sauropod dinosaur (Cretaceous)

Gastropod (Miocene)

1998

1994

Massachusetts Dinosaur tracks (Triassic) 1980
Michigan Mammut americanum Mastadon (Pleistocene) 2002
Mississippi

Basilosaurus cetoides

Zygorhiza kochii

Whale (Eocene)

Whale (Eocene)

1981

1981

Missouri

Delocrinus missouriensis

Hypsibema missouriense

Crinoid (Carboniferous)

Duck-billed dinosaur (Cretaceous)

1989

2004

Montana Maiasaura peeblesorum Duck-billed dinosaur (Cretaceous) 1985
Nebraska Archidiskodon imperator Mammoth (Pleistocene) 1967
Nevada Shonisaurus popularis Ichthyosaur (Triassic) 1977
New Jersey Hadrosaurus foulkii Duck-billed dinosaur (Cretaceous) 1991
New Mexico Coelophysis bauri Dinosaur (Triassic) 1981
New York Eurypterus remipes Sea scorpion (Silurian) 1984
North Carolina Carcharodon megalodon Megalodon (Cenozoic) 2013
North Dakota Teredo Petrified Wood (Cretaceous and Tertiary) 1967
Ohio Isotelus Trilobite (Ordovician) 1985
Oklahoma

Saurophaganax maximus

Acrocanthosaurus atokensis

Theropod dinosaur (Jurassic)

Theropod dinosaur (Cretaceous)

2000

2006

Oregon Metasequoia Dawn redwood (Cenozoic) 2005
Pennsylvania Phacops rana Trilobite (Devonian) 1988
South Carolina Mammuthus columbi Mammoth (Pleistocene) 2014
South Dakota Triceratops (Dinosaur) 1988
Tennessee Pterotrigonia thoracica Bivalve (Cretaceous) 1998
Texas Sauropod (Cretaceous) 2009
Utah Allosaurus Theropod dinosaur (Jurassic) 1988
Vermont Delphinapterus leucas Beluga whale (Pleistocene) 1993
Virginia Chesapecten jeffersonius Scallop (Neogene) 1993
Washington Mammuthus columbi Mammoth (Pleistocene) 1998
West Virginia Megalonyx jeffersoni Giant ground sloth (Pleistocene) 2008
Wisconsin Calymene celebra Trilobite (Paleozoic) 1985
Wyoming

Knightia

Triceratops

Fish (Paleogene)

(Cretaceous)

1987

1994

Edited by Brooks Mitchell