Edaphosaurus, skull, sculpture Quetzalcoatlus Envision the power of the

Envision the power of the living shark that once had this tooth

This class also includes crabs

Allosaurus fragilis Location: Mesa County

Crinoids are commonly referred to as "sea lilies"

The generic name refers to Marion Brandvold's discovery in 1978 of a nest with remains of eggshells and babies too large to be hatchlings

Edaphosaurus, skull, sculpture Quetzalcoatlus Envision the power of theEdaphosaurus, (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, during the late Carboniferous to early Permian periods. The American paleontologist Edward Drinker Cope first described Edaphosaurus in 1882, naming it for the "dental pavement" on both the upper and lower jaws, from the Greek edaphos ("ground"; also