It is a peirosaurid which lived during the Campanian and Maastrichtian stages of the Late Cretaceous in what is now state of São Paulo, Brazil.

[2] Pepesuchus was named by Diogenes A. Campos, Gustavo R. Oliveira, Rodrigo G. Figueiredo, Douglas Riff, Sergio A.K.

The generic name honours Professor José Martin Suárez (known by his colleagues as "Pepe"), and "suchus", from Greek meaning crocodile.

Among these features are five premaxillary teeth with the first two positioned close together and the oval-shaped cross-section of the jugal bone that makes up the lower temporal bar underneath the eye sockets.

Pepesuchus also has a ridge on the maxillary shelf of the palate, a feature it shares with all members of the larger clade Sebecia (which includes peirosaurids and the related family Sebecidae).