Official State Dinosaurs and Fossils

Your State's Official Dinosaur or Fossil

The trilobite is the official fossil of 3 different states.
Three different states claim the trilobite as their official fossil. Edwin McKee, USGS

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

StateScientific Name Common Name (age)Adoption Date
AlabamaBasilosaurus cetoidesWhale (Eocene) 1984
AlaskaMammuthus primigenius Mammoth (Pleistocene)1986
ArizonaAraucarioxylon arizonicum Petrified Wood (Triassic)1988
CaliforniaSmilodon californicusSaber-toothed cat (Quaternary)1973
Colorado Stegosaurus Stegosaurus (Cretaceous)1982
ConnecticutEubrontes giganteus Dinosaur Track (Jurassic)1991
DelewareBelemnitalla americana Belemnite (Cretaceous)1996
GeorgiaShark tooth (Cenozoic)1976
IdahoEquus simplicidens Hagerman horse (Pliocene)1988
IllinoisTullimonstrum gregarium Tully Monster (Carboniferous)1989
Kansas 

Pteranodon

Tylosaurus

Pterosaur (Cretaceous) 

Mosasaur (Cretaceous) 

2014

2014

KentuckyBrachiopod (Paleozoic)1986
LouisianaPalmoxylonPetrified 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
MichiganMammut 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

MontanaMaiasaura peeblesorumDuck-billed dinosaur (Cretaceous) 1985
NebraskaArchidiskodon imperatorMammoth (Pleistocene) 1967
NevadaShonisaurus popularisIchthyosaur (Triassic)1977
New JerseyHadrosaurus foulkii Duck-billed dinosaur (Cretaceous)1991
New MexicoCoelophysis bauri Dinosaur (Triassic)1981
New YorkEurypterus remipes Sea scorpion (Silurian) 1984
North CarolinaCarcharodon megalodonMegalodon (Cenozoic) 2013
North DakotaTeredo Petrified Wood (Cretaceous and Tertiary)1967
Ohio IsotelusTrilobite (Ordovician)1985
Oklahoma 

Saurophaganax maximus

Acrocanthosaurus atokensis

Theropod dinosaur (Jurassic) 

Theropod dinosaur (Cretaceous) 

2000

2006

OregonMetasequoia Dawn redwood (Cenozoic)2005
PennsylvaniaPhacops rana Trilobite (Devonian) 1988
South CarolinaMammuthus columbiMammoth (Pleistocene)  2014
South DakotaTriceratops(Dinosaur) 1988
Tennessee Pterotrigonia thoracica Bivalve (Cretaceous) 1998
Texas Sauropod (Cretaceous) 2009
UtahAllosaurus Theropod dinosaur (Jurassic) 1988
VermontDelphinapterus leucas Beluga whale (Pleistocene) 1993
VirginiaChesapecten jeffersonius Scallop (Neogene) 1993
WashingtonMammuthus columbiMammoth (Pleistocene) 1998
West VirginiaMegalonyx jeffersoni Giant ground sloth (Pleistocene) 2008
WisconsinCalymene celebra Trilobite (Paleozoic) 1985
Wyoming

Knightia

Triceratops 

Fish (Paleogene) 

(Cretaceous) 

1987

1994

 

Edited by Brooks Mitchell