ammonites
Allosaurus Marsh 1877 (allosaurid)

Archosauria - Avetheropoda - Allosauridae

Allosaurus skull: MOR

Synonyms: Antrodemus Leidy 1870, Creosaurus Marsh 1878, Epanterias Cope 1878, Epantherias Cope 1878, Labrosaurus Marsh 1879, Saurophagus Ray 1941

Full reference: O. C. Marsh. 1877. Notice of new dinosaurian reptiles from the Jurassic formation. American Journal of Science and Arts 14:514-516

Parent taxon: Allosauridae according to M. T. Carrano et al. 2012

Sister taxa: Allosaurinae, Ornitholestinae, Saurophaganax

Subtaxa: Allosaurus europaeus, Allosaurus fragilis, Allosaurus jimmadseni

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Ecology: ground dwelling carnivore