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Arkansaurus (meaning "Arkansas lizard") 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 .
The ornithomimosaur Arkansaurus fridayi lived at this time, known only from remains of its foot discovered in 1972. [12] The seas of southern and eastern Arkansas began to shrink during the early Cenozoic. Sharks and oysters were still present in its sea waters. [4]
This is a list of U.S. state dinosaurs in the United States, including the District of Columbia.Many states also have dinosaurs as state fossils, or designate named avian dinosaurs (List of U.S. state birds), but this list only includes those that have been officially designated as "state dinosaurs".
Arkansaurus [9] A. fridayi. An ornithomimosaur. Astrophocaudia [10] A. slaughteri. Paluxy Formation A member of Somphospondyli. Cedarosaurus [10] C. weiskopfae. Paluxy Formation A brachiosaurid. Paluxysaurus [11] P. jonesi. Twin Mountains Formation Junior synonym of Sauroposeidon proteles. Sauroposeidon [10] [11] S. proteles. Twin Mountains ...
Arkansaurus [170] Gen. et sp. nov Valid Hunt & Quinn Early Cretaceous (Albian–Aptian) Trinity Group United States ( Arkansas) An ornithomimosaur theropod. Genus includes new species A. fridayi. Reconstruction of Arkansaurus fridayi: Avimimus nemegtensis [171] Sp. nov Valid Funston et al. Late Cretaceous. Nemegt Formation Mongolia. An ...
Hunt and Quinn described the new genus and species Arkansaurus fridayi. [26] 2019. Description of an ornithomimid specimen UALVP 16182, putatively assigned to the genus Dromiceiomimus, and a study on the validity of this genus is published by Macdonald & Currie (2019). [27]
Braden, Angela K. The Arkansas Dinosaur "Arkansaurus fridayi". Arkansas Geologic Survey. 2007. "A Brief Summary of the Geologic History of Ohio". GeoFacts. Number 23. Ohio Department of Natural Resources, Division of Geological Survey. July 2001. Brown, R.C. (2008). Florida's Fossils: Guide to Location, Identification, and Enjoyment (third ed ...
The museum was one of three state organizations to receive a mold of the Arkansaurus fridayi fossil - "The Arkansas Dinosaur" - and also had a statue of it. [1] It became the Museum of Science and Natural History in 1964, and the Arkansas Museum of Science and History in 1983.