PaleoDB taxon number: 67750
Full reference: N. J. Wilimovsky. 1956. Protoscaphirhynchus squamosus, a new sturgeon from the Upper Cretaceous of Montana. Journal of Paleontology 30(5):1205-1208
Sister taxa: none
Type specimen: UMMP 22210, a partial skeleton. Its type locality is Bear Creek/Rock Creek (UMMP), which is in a Maastrichtian terrestrial horizon in the Hell Creek Formation of Montana.
Ecology: aquatic carnivore