Netsepoye hawesi is an extinct prehistoric cartilaginous fish, which lived more than 320 million years ago, during the Late Mississippian. It has been discovered at the well known Bear Gulch Formation in Montana, United States, dated at Carboniferous period. This Paleozoic fish is mostly known by teeth, though cephalic region and the rest of the body are partially preserved. Pectoral fins were very broad and the pelvic girdle showed very high dorsal process.