Projectile Points Poster by Robert L. Pyle West Virginia Styracosaurus in a time known as

in a time known as the early Woodland Period

(meaning "pavement lizard" for dense clusters of teeth) is a genus of extinct edaphosaurid synapsid that lived in what is now North America and Europe around 300 to 280 million years ago

corrugated surface with which to chew

Ailuravus is the largest

It was made of plaster and cost $20 which was a considerable sum at that time

Projectile Points Poster by Robert L. Pyle West Virginia Styracosaurus in a time known asNOTE: Points on the poster are shown actual size 1: 1 scale. In archaeological terms, a projectile point or arrowhead is an object that was hafted to weapon that was capable of being thrown or projected, such as a spear, dart, or arrow, or perhaps used as a knife. They are thus different from weapons presumed to have been kept in the hand, such as axes and maces, and the stone mace or axe heads often attached to them. Stone tools, including projectile