Genus: Serpentisuchops PERSONS IV, STREET & KELLEY, 2022
Etymology: Latin, serpent, "snake" and Latin, suchus, "crocodile".

Species: pfisterae PERSONS IV, STREET & KELLEY, 2022
Etymology: In honor of Anna Pfister, the landowner whose generosity afforded the scientific sudy and donation of the type specimen.

Holotype: GPM5001

Locality: Old Woman Anticline, southeastern end of the Powder Basin, Niobrara County, Wyoming.

Horizon: Upper Member, Pierre Shale.

Biostratigraphy:

Age: Lower Maastrichtian, Late Senonian Subepoch, Late Gulf Epoch, Late Cretaceous.

Material:Partial skull, lower jaw, 32 cervical, 4 pectoral, 2 dorsal, 2 sacral, and 18 caudal vertebrae.vertebral column, plus left ilium and pubis.