Genus: Platynotosaurus THIESSEN (nomen nudum) NESBITT & THIESSEN, 2004 (in press)
Etymology: Greek, platy, "broad," Greek, noto, "south" and Greek, sauros, "lizard."

Species: leuppensis THIESSEN (nomen nudum) (in press)
Etymology: In reference to the Leupp quarry, Cocconino County, Arizona.

Holotype:

Locality: Leupp quarry, Cocconino County, Arizona.

Horizon: Wupatki Member, Lower Moenkopi Formation.

Biostratigraphy:

Age: Spathian Stage, Upper Early Triassic Epoch, Early Triassic.

Material: Several skeletons.