Species: campelli NICHOLLS & BRINKMAN, 1993
Etymology:
= Gyrognathus campbelli NICHOLLS & BRINKMAN, 1990 (nomen nuda)

Holotype: RTMP 89.127.19

Locality: "D" crique, near Wapiti Lake, 54'31"10'"N, 120'43"19'"W, British Columbia Province, Canada.

Horizon: Sulphur Mountain Formation.

Biostratigraphy:

Age: Griesbachian to Spathian in Stage, Upper Scythian Epoch, Late Early Triassic.

Material: Incomplete and disarticulated skull and mandibles, elements include premaxilla, maxilla, vomer, both dentaries, angular, splienial (?) and unidentified elements.