List of U.S. state dinosaurs

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This is a list of U.S. state dinosaurs in the United States, including the District of Columbia. A large number of states also have dinosaurs as state fossils, but this list only includes those that have been officially designated as "state dinosaurs". All U.S. states also have a state bird, the direct evolutionary descendants of dinosaurs. [1]

United States Federal republic in North America

The United States of America (USA), commonly known as the United States or America, is a country comprising 50 states, a federal district, five major self-governing territories, and various possessions. At 3.8 million square miles, the United States is the world's third or fourth largest country by total area and is slightly smaller than the entire continent of Europe's 3.9 million square miles. With a population of over 327 million people, the U.S. is the third most populous country. The capital is Washington, D.C., and the largest city by population is New York City. Forty-eight states and the capital's federal district are contiguous in North America between Canada and Mexico. The State of Alaska is in the northwest corner of North America, bordered by Canada to the east and across the Bering Strait from Russia to the west. The State of Hawaii is an archipelago in the mid-Pacific Ocean. The U.S. territories are scattered about the Pacific Ocean and the Caribbean Sea, stretching across nine official time zones. The extremely diverse geography, climate, and wildlife of the United States make it one of the world's 17 megadiverse countries.

Dinosaur Superorder of reptiles (fossil)

Dinosaurs are a diverse group of reptiles of the clade Dinosauria. They first appeared during the Triassic period, between 243 and 233.23 million years ago, although the exact origin and timing of the evolution of dinosaurs is the subject of active research. They became the dominant terrestrial vertebrates after the Triassic–Jurassic extinction event 201 million years ago; their dominance continued through the Jurassic and Cretaceous periods. Reverse genetic engineering and the fossil record both demonstrate that birds are modern feathered dinosaurs, having evolved from earlier theropods during the late Jurassic Period. As such, birds were the only dinosaur lineage to survive the Cretaceous–Paleogene extinction event 66 million years ago. Dinosaurs can therefore be divided into avian dinosaurs, or birds; and non-avian dinosaurs, which are all dinosaurs other than birds. This article deals primarily with non-avian dinosaurs.


List of dinosaurs for states in the US

State or TerritoryDinosaurImageDate
Arizona Sonorasaurus thompsoni Sonorasaurus thompsoni.jpg 2018 [2]
Arkansas Arkansaurus fridayi Arkansaurus NT.jpg 2017 [3]
California Augustynolophus morrisi Augustynolophus NT.jpg 2017 [4]
Colorado Stegosaurus armatus Stegosaurus BW.jpg 1982-04-28 [5]
Connecticut Dilophosaurus sp. Dilophosaurus wetherilli.PNG 07/10/2017 [6]
District of Columbia Capitalsaurus Capitalsaurus.jpg 1998 [7]
Iowa Tyrannosaurus rex Tyrannosaurus.jpg 1992 [8]
Maryland Astrodon johnstoni Astrodon johnstoni .jpg 1998 [9]
Missouri Hypsibema missouriensis Hypsibema missouriensis Size Chart.svg 2004 [10]
New Jersey Hadrosaurus foulkii HADROSAURUS.jpg 1991 [11]
Oklahoma Acrocanthosaurus atokensis Acrocanthosaurus skeleton (1).jpg 2006
Texas Paluxysaurus jonesi Sauroposeidon dinosaur.svg 2009 (replaced Pleurocoelus which was state dinosaur 1997–2009) [12]
Utah Utahraptor ostrommaysorum Utahraptor updated.png 2018 [13]
Wyoming Triceratops horridus Triceratops BW.jpg 1994 [14]

See also


  1. Chiappe, Luis M. (April 16, 2009). "Downsized Dinosaurs: The Evolutionary Transition to Modern Birds". Evolution: Education and Outreach. 2: 248. doi:10.1007/s12052-009-0133-4.
  2. "Sonorasaurus officially named Arizona's state dinosaur". 2018-04-11. Retrieved 2018-04-12.
  3. Chandler, Angela (22 February 2017). "Official State Dinosaur". Encyclopedia of Arkansas. Retrieved 25 September 2017.
  4. Blume, Howard (23 September 2017). "California gets its own official state dinosaur". Los Angeles Times.
  5. "Archives -".
  6. Altimari, Daniela. "Bill Naming State Dinosaur Signed by the Governor". Retrieved 2017-07-20.
  7. "Official Dinosaur Designation Act of 1998, Bill 12-538". Archived from the original on 2006-09-28.
  8. "Iowa State Dinosaur".[ permanent dead link ]
  9. "Astrodon johnstoni, Maryland State Dinosaur".
  10. RSMo 10.095
  11. "NJ Legislation on State Dinosaur".
  12. Texas State Library and Archives Commission. Texas State Symbols. July 1, 2010. Accessed November 25, 2010.
  13. Cathcart, Preston (2018-02-16). "Utahraptor bill sails through House committee". Retrieved 2018-02-17.
  14. "Wyoming Facts and Symbols - State of Wyoming".

Related Research Articles

The following are lists of U.S. state, district, and territorial symbols as recognized by the state legislatures, territorial legislatures, or tradition. Some, such as flags, seals, and birds have been created or chosen by all U.S. polities, while others, such as state crustaceans, state mushrooms, and state toys have been chosen by only a few.

Coelurosauria suborder of reptiles (fossil)

Coelurosauria is the clade containing all theropod dinosaurs more closely related to birds than to carnosaurs.

<i>Arkansaurus</i> genus of reptiles (fossil)

Arkansaurus is an extinct genus of ornithomimosaurian theropod dinosaur. It lived during the Albian and Aptian stages of the Early Cretaceous. The type and only species is Arkansaurus fridayi.

Stan (dinosaur)

"Stan", also known by its inventory number BHI 3033, is a Tyrannosaurus Rex fossil found in the Hell Creek Formation in South Dakota, just outside of Buffalo in 1987, and excavated in 1992. It is one of the largest and fifth most complete T.rex fossils discovered to date, at more than 70% bulk.

Fox Hills Formation

The Fox Hills Formation is a Cretaceous geologic formation in the northwestern Great Plains of North America. It is present from Alberta on the north to Colorado in the south.