4.3" Colonial Rugose Coral Fossil Devonian Age Speed Quarry, Clark County, Indiana Fossil Leaf which made them highly fossilizable

which made them highly fossilizable and left a rich record in ancient seas

about 500 square miles of lake sediments remain exposed

including early whales that occupied similar trophic levels

The Cephalon (Head Shield): A highly evolved structure featuring sophisticated compound eyes (in most species) with prismatic calcite lenses

4.3" Colonial Rugose Coral Fossil Devonian Age Speed Quarry, Clark County, Indiana Fossil Leaf which made them highly fossilizableLocation: Speed Quarry, Clark County, Indiana Weight: 7. 5 Ounces Dimensions: 4. 3 Inches Long, 3. 1 Inches Wide, 2. 2 Inches Thick Middle Devonian Age 380 Million Years Old The item pictured is the one you will receive. Colonial Rugose Fossil Coral (Prismatophyllum Prisma) Dare to own a relic from one of nature's boldest experiments in reef formation. During the Devonian period410 million years agocorals entered the oceans with remarkable force,