2. Devon, England

5. This stretch of limestone gives visitors the opportunity to walk across an ancient sea floor.

6. Originally a series of rapids from the Ohio River, “The Falls” is now one of the largest naturally exposed, Devonian fossil beds. A colleciton of long extinct rugosan fossil corals (horn corals), brachiopods, trilobites, and primitive mollusks. Falls of the Ohio State Park – Clarksville, Indiana/Louisville, Kentucky

7. Coal County, Oklahoma The two primary Devonian formations are the Haragan and Bois d' Arc. Over 30 different Devonian trilobite species in about a dozen genera have been described. Acathopyge consanguinea Extremely rare – found at both formations.

8. Devonian Period