Allosauridae
| Allosaurids Temporal range: Late Jurassic, | |
|---|---|
| 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 |
| Clade: | †Allosauria |
| Family: | †Allosauridae Marsh, 1878 |
| Type species | |
| †Allosaurus fragilis Marsh, 1877 | |
| Genera | |
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| Synonyms | |
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Allosauridae is a family of medium to large bipedal, carnivorous allosauroid theropod dinosaurs from the Late Jurassic. Allosauridae is a fairly old taxonomic group, having been first named by the American paleontologist Othniel Charles Marsh in 1878. 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.
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