US Official State Fossils

US Symbols Online: Official State Fossils.

Official State Fossils
Find information on each US state fossil, state dinosaur, and state stone or gem that is a fossil! Includes images, descriptions, taxonomic hierarchy, and a history of the state fossils representing the state symbols for each of the 50 states. Lists their basic characteristics.
State	Fossil	Year	Scientific	Time Period
Alabama	Zeuglodon - whale (fossil)	1984	Basilosaurus cetoides	Eocene
Alaska	Woolly Mammoth (fossil)	1986	Mammuthus primignius	Pleistocene
Arizona	Petrified Wood (fossil)	1988	Araucarioxylon arizonicum	Triassic
Arkansas
California	Sabre-Toothed Cat (fossil)	1973	Smilodon californicus	Pleistocene
Colorado	Plated Dinosaur (fossil)	Apr 28, 1982	Stegosaurus stenops	Jurassic
Connecticut	Dinosaur Tracks (fossil)	1991	Eubrontes giganteus	Triassic
Delaware	Belemnite (fossil)	Jul 2, 1996	Belemnitella americana	Cretaceous
Florida	Agatized Coral(stone)	1979	Cnidaria anthozoa	Eocene
Georgia	Shark Tooth (fossil)	1976	undetermined	Tertiary
Hawaii
Idaho	Hagerman Horse Fossil (fossil)	Mar 16, 1988	Equus simplicidens	Pleistocene
Illinois	Tully Monster (fossil)	1989	Tullimonstrum gregarium	Carboniferous
Iowa
Indiana
Kansas
Kentucky	Brachiopod (fossil)	Jul 15, 1986	undetermined	Paleozoic
Louisiana	Petrified Palmwood (fossil)	Jul 31, 1976	Palmoxylon sp.	Oligocene
Maine	Plant (fossil)	1985	Pertica quadrifaria	Devonian
Maryland	Snail (fossil shell)	Oct 1, 1994	Exphora gardnerae garnerae	Miocene
Maryland	Sauropod Dinosaur (dinosaur)	Oct 1, 1998	Astrodon johnstoni	Cretaceous
Massachusetts	Dinosaur Tracks (fossil)	1980	undetermined	Triassic
Michigan	Mastodon (fossil)	Apr 8, 2002	Mammut americanum	Pliocene - Pleistocene
Michigan	Petoskey Stone - coral (stone)	Jun 28, 1965	Hexagonaria pericarnata	Devonian
Minnesota
Mississippi	Prehistoric Whales (fossil)	Mar 26, 1981	Basilosaurus cetoides Zygorhiza kochii	Eocene
Mississippi	Petrified Wood (stone)	May 14, 1976	undetermined	Oligocene
Missouri	Crinoidea (fossil)	Jun 16, 1989	Delocrinus missouriensis	Carboniferous
Montana	Duck-billed Dinosaur (fossil)	Feb 22, 1985	Maiasaura peeblesorum	Cretaceous
Nebraska	Mammoth (fossil)	Mar 1, 1967	Elephas primigenius; Elephas columbi ; Elephas imperator	Pleistocene
Nevada	Ichthyosaur (fossil)	1977	Shonisaurus sp.	Triassic
New Jersey	Duckbilled Dinosaur (dinosaur)	Jun 13, 1991	Hadrosaurus foulki	Cretaceous
New Mexico	Coelophysis Dinosaur (fossil)	Mar 17, 1981	Coelophysis bauri	Triassic
New York	Sea Scorpion (fossil)	1984	Eurypterus remipes	Silurian
North Carolina
North Dakota	Teredo Petrified Wood (fossil)	1967	undetermined	Paleocene
Ohio	Trilobite (invertebrate fossil)	Jun 20, 1985	Isotelus sp.	Ordovician
Oklahoma	Theropod Dinosaur (fossil)	Apr 14, 2000	Saurophaganax maximus	Jurassic
Oregon	Metasequoia (fossil)	May 4, 2005	undetermined	Miocene
Pennsylvania	Trilobite (fossil)	Dec 5, 1988	Phacops rana	Devonian
South Dakota	Triceratops Dinosaur (fossil)	1988	Triceratops prorosus	Cretaceous
Tennessee	Bivalve Mollusc (fossil)	1998	Pterotrigonia thoracica	Cretaceous
Texas	Sauropod dinosaur (dinosaur)	Jun 3, 1997	Pleurocoelus	Cretaceous
Texas	Petrified Palmwood (stone)	Mar 26, 1969	Palmoxylon sp.	Oligocene
Utah	Theropod Dinosaur (fossil)	1988	Allosaurus fragilis	Jurassic
Vermont	White Whale (fossil)	Jun 6, 1993	Delphinapterus leucas	Pleistocene
Virginia	Bivalve Scallop (fossil)	1993	Chesapecten jeffersonius	Pliocene
Washington	Columbian Mammoth (fossil)	1998	Mammuthus columbi	Pleistocene
Washington	Petrified Wood (gem)	Mar 12, 1975	undetermined	Miocene
West Virginia	Chalcedony (gem)	Mar 10, 1990	Lithostrotionella	Mississippian
Wisconsin	Trilobite (fossil)	Apr 2, 1986	Calymene celera	Silurian
Wyoming	Horned Dinosaur (dinosaur)	Mar 18, 1994.	Triceratops	Cretaceous
Wyoming	Fish (fossil)	Feb18, 1987	Knightia sp.	Eocene

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