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List of Dinosaurs of the Morrison Formation
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List of Dinosaurs of the Morrison Formation : ウィキペディア英語版
List of Dinosaurs of the Morrison Formation

The Morrison Formation is a distinctive sequence of Late Jurassic sedimentary rock that is found in the western United States, which has been the most fertile source of dinosaur fossils in North America. It is composed of mudstone, sandstone, siltstone and limestone and is light grey, greenish gray, or red. Most of the fossils occur in the green siltstone beds and lower sandstones, relics of the rivers and floodplains of the Jurassic period.
==Fauna comparisons==
The fauna of Morrison Formation is similar to one in the coeval rocks of Tendaguru Beds (in Tanzania) and Lourinhã Formation in Portugal,〔Mateus, O. 2006. Late Jurassic dinosaurs from the Morrison Formation, the Lourinhã and Alcobaça Formations (Portugal), and the Tendaguru Beds (Tanzania): a comparison. New Mexico Museum of Natural History and Science Bulletin. 36:223-231.〕 mostly with the second. Some genera are shared in Morrison and Lourinhã, such as ''Torvosaurus'',〔Hendrickx, C, Mateus O. 2014. Torvosaurus gurneyi n. sp., the largest terrestrial predator from Europe, and a proposed terminology of the maxilla anatomy in nonavian theropods, 03. PLoS ONE. 9:e88905., Number 3〕 ''Ceratosaurus'',〔Mateus, O., & Antunes M. T. (2000). Ceratosaurus sp. (Dinosauria: Theropoda) in the Late Jurassic of Portugal. Abstract volume of the 31st International Geological Congress. , Rio de Janeiro, Brazil〕 ''Stegosaurus'', ''Dryosaurus'',〔Mateus, O. (2007). Notes and review of the ornithischian dinosaurs of Portugal. Journal of Vertebrate Paleontology. 27, 114A-114A., Jan: Society of Vertebrate Paleontology〕 and ''Allosaurus''.〔Mateus, O, Walen A, Antunes MT. 2006. The large theropod fauna of the Lourinhã Formation (Portugal) and its similarity to the Morrison Formation, with a description of a new species of Allosaurus. New Mexico Museum of Natural History and Science Bulletin. 36:123-129.〕
In sum, Morrison Fm has 47 valid genera of dinosaurs.

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