Editing Torvosaurus (section)

=== Fauna and habitat in North America ===
Studies suggest that the [[natural environment|paleoenvironment]] of this section of the Morrison Formation included rivers that flowed from the west into a basin that contained a giant, saline alkaline lake and there were extensive wetlands in the vicinity. The Dry Mesa Dinosaur Quarry of western Colorado yields one of the most diverse Upper Jurassic vertebrate assemblages in the world.<ref>Richmond, D.R. and Morris, T.H., 1999, Stratigraphy and cataclysmic deposition of the Dry Mesa Dinosaur Quarry, Mesa County, Colorado, in Carpenter, K., Kirkland, J., and Chure, D., eds., The Upper Jurassic Morrison Formation: An Interdisciplinary Study, Modern Geology v. 22, no. 1-4, pp. 121–143.</ref> The Dry Mesa Quarry has produced the remains of the [[Sauropoda|sauropods]] ''[[Apatosaurus]]'', ''[[Brachiosaurus]]'', ''[[Diplodocus]]'', ''[[Barosaurus]]'', ''[[Supersaurus]]'', and ''[[Camarasaurus]]'', the [[Iguanodontia|iguanodonts]] ''[[Camptosaurus]]'' and ''[[Dryosaurus]]'', and the [[Theropoda|theropods]] ''[[Allosaurus]]'', ''[[Tanycolagreus]]'', ''[[Koparion]]'', ''[[Stokesosaurus]]'', ''[[Ceratosaurus]]'', and ''[[Ornitholestes]]'', as well as ''[[Othnielosaurus]]'', ''[[Gargoyleosaurus]]'', and ''[[Stegosaurus]]''.<ref name=DJCetal06>{{cite book |last=Chure |first=Daniel J. |author2=Litwin, Ron |author3=Hasiotis, Stephen T. |author4=Evanoff, Emmett |author5= Carpenter, Kenneth  |year=2006 |chapter=The fauna and flora of the Morrison Formation: 2006 |editor=Foster, John R. |editor2=Lucas, Spencer G. |title=Paleontology and Geology of the Upper Jurassic Morrison Formation |series=New Mexico Museum of Natural History and Science Bulletin, '''36''' |publisher=New Mexico Museum of Natural History and Science |location=Albuquerque, New Mexico |pages=233–248}}</ref>

The flora of the period has been revealed by fossils of [[chlorophyta|green algae]], [[fungi]], [[moss]]es, [[equisetum|horsetails]], [[Fern|ferns]], [[cycad]]s, [[ginkgo]]es, and several families of [[conifer]]s. Other animal fossils discovered include [[bivalve]]s, [[snail]]s, [[actinopterygii|ray-finned fishes]], [[frog]]s, [[salamander]]s, [[amphibian]]s, [[turtle]]s, [[sphenodontia|sphenodonts]], [[lizard]]s, terrestrial (like ''[[Hoplosuchus]]'') and aquatic [[crocodylomorpha|crocodylomorphs]], cotylosaurs, several species of [[pterosaur]]s, like ''[[Harpactognathus]]'', and early [[mammal]]s, such as [[multituberculata|multituberculates]], [[symmetrodonta|symmetrodonts]], and [[triconodonta|triconodonts]].<ref name=DJCetal06/>