| Avisaurus Temporal range: Late Cretaceous (Maastrichtian),
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| Holotype tarsometatarsus of A. archibaldi | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Clade: | Dinosauria |
| Clade: | Saurischia |
| Clade: | Theropoda |
| Clade: | Avialae |
| Clade: | †Enantiornithes |
| Family: | †Avisauridae |
| Genus: | †Avisaurus Brett-Surman & Paul, 1985 |
| Type species | |
| †Avisaurus archibaldi Brett-Surman & Paul, 1985
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| Species | |
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Avisaurus (meaning "bird lizard") is a genus of enantiornithine avialan from the Late Cretaceous of North America.[1]