Species: browni WILLISTON, 1904
Etymology:
Holotype: FMNH UC 633.
Locality: Vicinity of the Little Popo Agie River, near Lunder, Fremont County, Wyoming.
Horizon: Upper Popo Agie Formation.
Biostratigraphy:
Age: Otischalkian, Late Carnian Stage, Lower Late Triassic Epoch, Late Triassic.
Material: Humerus, scapula and left side of pelvis.