Doryaspis nathorsti, primitive jawless fish Protoceratops endemic to North America during

endemic to North America during the Pleistocene epoch (1

8 m in height and a weight between 1 and 2

but when found

Each � skull profile is on a plaque measuring 16x12 inches

This shows scientists the true shape and texture of the animal

Doryaspis nathorsti, primitive jawless fish Protoceratops endemic to North America duringDoryaspis ("Dart Shield") (also known by its synonym, "Lyktaspis") is an extinct genus of primitive jawless fish that lived in the Devonian period. Fossils have been discovered in Spitsbergen. The animals had a canteen shaped body armor, and had large branchial plates that extended out and curved downward in a triangular shape, very similar to those of the pycnosteids. An element of the median oral plates (that would correspond to the lower lip or