Allosaurids Temporal range: Late Jurassic,
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An A. fragilis skeletal mount, at the Carnegie Museum of Natural History | |
Scientific classification ![]() | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Clade: | Dinosauria |
Clade: | Saurischia |
Clade: | Theropoda |
Superfamily: | †Allosauroidea |
Family: | †Allosauridae Marsh, 1878 |
Type species | |
†Allosaurus fragilis Marsh, 1877
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Genera[1] | |
Synonyms | |
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Allosauridae is an extinct family of medium to large bipedal, carnivorous allosauroid theropod dinosaurs from the Late Jurassic.[2] Allosauridae is a fairly old taxonomic group, having been first named by the American paleontologist Othniel Charles Marsh in 1878.[3] Allosaurids are characterized by an astragalus with a restriction of the ascending process to the lateral part of the bone, a larger medial than lateral condyle, and a horizontal groove across the face of the condyles.[4]
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