Genus: Platypterygius KUHN, 1946
Etymology: Greek, platys, “broad”, Greek, pteryion, “fin” + us”: Broad fin.

Subgenus: Longirostria ARKHANGELSKY, 1998
Etymology: Latin, Longus, “long” and Latin, Rostrum, “snout”: Long snout.

Species: longmani (WADE, 1988) ARKHANGELSKY, 1998 (Type)

WADE, 1988, KEAR, BOLES, & SMITH, 2003

Locality: Canary, SE of Boulia, NW Queensland State, Australia.

Horizon: Toolebuck Formation.

Biostratigraphy:

Age: Albian Stage, Upper Gallic Subepoch, Early Cretaceous Epoch, Early Cretaceous.

Material:

QMF 16811: Fragmentary skeleton.
Note: A hatchling-sized protostegid turtle, an enantiornithine birds, skeletal elements from possibly a Cooyoo or Pachyrhizodus fish, and a phosphatic nodules found in the stomach region.