Doryaspis nathorsti, primitive jawless fish Protoceratops Each � skull profile is

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

indicating bipedal locomotion

endemic to North America during the Pleistocene epoch (1

anchoring for extra muscle support and rigidity for the backbone

Doryaspis nathorsti, primitive jawless fish Protoceratops Each � skull profile isDoryaspis ("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