Category
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black caiman
species of reptile

Caiman
genus of crocodilians from the alligator family

Purussaurus
Purussaurus is a genus of extinct giant caimans that lived in the Americas during the Miocene epoch, from the Friasian to the Huayquerian in the SALMA classification. It is known from skull material found in the Brazilian and Peruvian Amazon, Argentina, Colombian Villavieja Formation, Panamanian Culebra Formation, Urumaco, and Socorro Formations of northern Venezuela.
Melanosuchus
Melanosuchus, from Ancient Greek μέλας (mélas), meaning "black", and σούχος (soúkhos), meaning "crocodile", is a genus of caiman. The genus is most commonly referred to as the "Black Caimans". The black caiman of South America is the sole extant (living) species, and is the largest living member of the subfamily Caimaninae, as well as the entire alligator family Alligatoridae.