Blastoid 57be4d5f38af896246e9d619e11b02dc 5 on the Moh's scale

5 on the Moh's scale

Stingrays are a dimorphic

Although many Starfish are carnivores

as it was one of the first Ice Age species to go extinct

This unique tree produces a large underground root with many outgrowths

Blastoid 57be4d5f38af896246e9d619e11b02dc 5 on the Moh's scaleThe oldest blastoids lived about 425 million years ago. The animals survived until the Permian Period, about 260 million years ago, when they became extinct. Blastoids look much like small hickory nuts. They most commonly are found in the river cliffs and stream banks of western and southwestern Illinois, especially in Randolph County, and in southern Illinois near the Ohio River.