Reptilia - Crocodylia - Alligatoridae
Full reference: A. Cossette and D. Tarailo. 2024. Crocodylian diversity during the early Eocene climatic optimum in the Golden Valley Formation of North Dakota, U.S.A. Journal of Vertebrate Paleontology e2403579
Parent taxon: Caimaninae according to A. Cossette and D. Tarailo 2024
Sister taxa: Caiman tremembensis, Centenariosuchus, Ceratosuchus, Chinatichampsus, Culebrasuchus, Globidentosuchus, Gnatusuchus, Jacarea, Kuttanacaiman, Mourasuchus, Nettosuchidae, Orthogenysuchus, Paranacaiman, Paranasuchus, Wannaganosuchus
Subtaxa: Albertochampsa Brachychampsa Chrysochampsa Stangerochampsa
Ecology: carnivore
Distribution:
• Eocene of United States (1: North Dakota collection)
• Paleocene of United States (1: Montana)
• Cretaceous of Canada (3: Alberta, Saskatchewan), Kazakhstan (1), Mexico (1), United States (124: Colorado, Montana, New Jersey, New Mexico, North Dakota, South Dakota, Texas, Utah, Wyoming), Uzbekistan (1)
Total: 132 collections including 134 occurrences