Ornithomimidae

Gallimimus ( ) is a genus of theropod dinosaur that lived in what is now Mongolia during the Late Cretaceous period. Several fossils in various stages of growth were discovered by Polish-Mongolian expeditions in the Gobi Desert of Mongolia during the 1960s; a large skeleton discovered in this region was made the holotype specimen of the new genus and species Gallimimus bullatus in 1972. The generic name means "chicken mimic", referring to the similarities between its neck vertebrae and those of the Galliformes. The specific name is derived from bulla, a golden capsule worn by Roman youth, in r

Ornithomimus (; "bird mimic") is a genus of ornithomimid theropod dinosaurs from the Campanian and Maastrichtian ages of the Late Cretaceous in western North America. Ornithomimus was a swift, bipedal dinosaur which was covered in feathers and equipped with a small toothless beak that may indicate an omnivorous diet. It is usually classified into two species: the type species, Ornithomimus velox, and a referred species, Ornithomimus edmontonicus.

Struthiomimus (meaning "ostrich mimic", from the Ancient Greek στρούθειος/stroutheios, meaning "of the ostrich", and μῖμος/mimos, meaning "mimic" or "imitator") is a genus of ornithomimid dinosaurs from the Late Cretaceous of what is now western North America. They were long-legged, bipedal, ostrich-like dinosaurs with toothless beaks. The type species, Struthiomimus altus, is one of the more common, smaller dinosaurs found in Dinosaur Provincial Park. Their overall abundance, in addition to their toothless beak, suggests that these animals were mainly herbivorous or (more likely) omnivorous,

Archaeornithomimus (meaning "ancient bird mimic") is a genus of ornithomimosaurian theropod dinosaur that lived during the Late Cretaceous period (around 96 million years ago) in the Iren Dabasu Formation of Inner Mongolia, China.

Ornithomimidae is a family of theropod dinosaurs which bore a superficial resemblance to modern ostriches. Ornithomimids were cursorial, omnivorous or herbivorous dinosaurs known mainly from the Late Cretaceous Period of Laurasia (now Asia and North America), though they have also been reported from the Lower Cretaceous Wonthaggi Formation of Australia.

Anserimimus ( ; "goose mimic") is a genus of ornithomimid theropod dinosaur, from the Late Cretaceous Period of what is now Mongolia. It was a lanky, fast-running animal, possibly an omnivore. From what fossils are known, it probably closely resembled other ornithomimids, except for its more powerful forelimbs.

Dromiceiomimus is a genus of ornithomimid theropod from the Late Cretaceous (early Maastrichtian) of Alberta, Canada. The type species, D. brevitertius, is considered a synonym of Ornithomimus edmontonicus by some authors, while others consider it a distinct and valid taxon. It was a small ornithomimid that weighed about .

Aepyornithomimus (meaning "Aepyornis mimic") is a genus of ornithomimid theropod dinosaur from the Late Cretaceous Djadochta Formation of Mongolia. It lived in the Campanian, around 75 million years ago, when the area is thought to have been a desert. The type and only species is A. tugrikinensis.

Sinornithomimus is a genus of ornithomimid dinosaur that lived in the Late Cretaceous Ulansuhai Formation of Alshanzuo Banner, Inner Mongolia, northern China. The first remains were found in 1997 and described six years later in 2003 as the new genus and species Sinornithomimus dongi.

Mexidracon (meaning "Mexican dragon") is an extinct genus of ornithomimid theropod dinosaurs from the late Cretaceous Cerro del Pueblo Formation of Coahuila, Mexico. The genus contains a single species, M. longimanus, known from a partial skeleton. Mexidracon is the second ornithomimosaur to be named from this formation, following the deinocheirid Paraxenisaurus in 2020.

Qiupalong (IPA: International Phonetic Alphabet|; ) is an extinct genus of ornithomimosaurian theropod that was discovered in the Late Cretaceous Qiupa Formation of Henan, China. The genus contains a single species, Q. henanensis, the specific epithet for which was named for the province of Henan. Uniquely, Qiupalong is one of the few Late Cretaceous non-avian dinosaurs known from both Asia and Laramidia. A specimen from Alberta has been referred to the genus without being assigned to the type species or suggested to be similar to it. A fossil of an ornithomimid similar to Qiupalong has also b

Rativates is a genus of ornithomimid theropod dinosaur from the Campanian-aged (Late Cretaceous) Dinosaur Park Formation of Alberta, Canada. The type species is Rativates evadens.

Dzharacursor (meaning "Dzharakuduk runner") is a genus of ornithomimid theropod dinosaurs from the Late Cretaceous (Turonian age) Bissekty Formation of Uzbekistan. The type and only species is Dzharacursor bissektensis, originally assigned to the genus Archaeornithomimus.

Tototlmimus is an extinct genus of ornithomimid theropod dinosaur from the Late Cretaceous (Campanian) Packard Formation of Sonora, Mexico. Its type species is Tototlmimus packardensis, representing the first ornithomimosaur formally described from this country.

species of reptile