Ornithomimosauria ("bird-mimic lizards") are theropod dinosaurs which bore a superficial resemblance to the modern-day ostrich. They were fast, omnivorous...

Cretaceous–Paleogene extinction event, including the Tyrannosauroidea, Ornithomimosauria, Oviraptorosauria, Deinonychosauria, Enantiornithes, and Hesperornithes...

is notable for possessing more teeth than any other member of the Ornithomimosauria (or any other theropod), most of which were toothless. In July 1993...

ornithomimids within their own infraorder, Ornithomimosauria, in 1976. The constituency of Ornithomimidae and Ornithomimosauria varied with different authors. Paul...

often included. Together with the next closest sister group, the Ornithomimosauria, Maniraptora comprises the more inclusive clade Maniraptoriformes...

proportionally long. The family Ornithomimidae is part of the group Ornithomimosauria. Anserimimus, also from Mongolia, is thought to have been the closest...

placed ornithomimids within their own infraorder, Ornithomimosauria, in 1976. Today, Ornithomimosauria is regarded as a clade within Coelurosauria. The...

1971, John Ostrom first proposed that Deinocheirus belonged with the Ornithomimosauria, while noting that it contained both ornithomimosaurian and non-ornithomimosaurian...

than in birds. In 1890, Marsh assigned Ornithomimus to the clade Ornithomimosauria, a classification that is still very common. Modern cladistic studies...

or recover the species outside of the Ornithomimidae, basal in the Ornithomimosauria. During the description of Hesperornithoides, an extensive Coelurosauria...