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stabilizing dorsal fin and the keel-shaped hydrodynamic edges of its head shield
Evolution of Plant Life
They looked rather like very small tapirs
each of which grew out of a separate spinal vertebra (a bone in the back)
Priscacara, Green River Fossil Fish Ouranosaurus stabilizing dorsal fin and theThe genus Priscacara is perhaps the most popular of the Green River fish fossils. A member of the Family Priscacaridae, the name Priscacara means "primitive head". Shaped rather like a sunfish, the genus sports sturdy, protective dorsal and anal spines. Among the two species, liops and serrata, serrata is uncommon. Liops is the smaller species, never exceeding 6 inches, whereas serrata have been found up to 14 inches. The genus went extinct at the end