The dinosaur genus Allosaurus has a complex taxonomic history, including multiple proposed species of which only a few are considered valid today. The genus was first described in 1877 by Othniel Charles Marsh from a very fragmentary specimen found...
Camptosaurus ( KAMP-tə-SOR-əs) is an extinct genus of plant-eating, beaked ornithischian dinosaurs of the Late Jurassic period of western North America and possibly also Europe. The name means 'flexible lizard' (Greek καμπτος (kamptos) meaning...
Brontosaurus ( BRON-tə-SOR-əs; literally 'thunder lizard', from the Greek words βροντή brontḗ, 'thunder', and σαῦρος saûros, 'lizard') is a genus of herbivorous sauropod dinosaur that lived in present-day United States during the Late Jurassic...
Como Bluff is a long ridge extending east–west, located between the towns of Rock River and Medicine Bow, Wyoming. The ridge is an anticline, formed as a result of compressional geological folding. Three geological formations, the Sundance, the...
Dakotadon (meaning "Dakota tooth") is a genus of iguanodont dinosaur from the Early Cretaceous (Valanginian to Barremian) Lakota Formation of South Dakota, USA, known from a partial skull. It was first described in 1989 as Iguanodon lakotaensis, by...
Theiophytalia is a genus of herbivorous iguanodontian dinosaur from the lower Cretaceous period (Aptian-Albian stage, about 112 million years ago) of Colorado, USA. It contains a single species, T. kerri.
The Morrison Formation is a distinctive sequence of Upper Jurassic sedimentary rocks 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,...
Apatosaurus (; meaning "deceptive lizard") is a genus of herbivorous sauropod dinosaur that lived in North America during the Late Jurassic period. Othniel Charles Marsh described and named the first-known species, Apatosaurus ajax, in 1877, and a...
This list of the Mesozoic life of Wyoming contains the various prehistoric life-forms whose fossilized remains have been reported from within the US state of Wyoming and are between 252.17 and 66 million years of age.
Sauropoda is a clade of dinosaurs that consists of roughly 300 species of large, long-necked herbivores and includes the largest terrestrial animals ever to exist. The first sauropod species were named in 1842 by Richard Owen, though at the time, he...