4.3" Colonial Rugose Coral Fossil Devonian Age Speed Quarry, Clark County, Indiana Grape Agate dense minerals such as orthopyroxene

dense minerals such as orthopyroxene crystallized early and migrated downward

Weight: 1 Pound 5

The thorax (middle) consisted of multiple articulated segments

who famously described them as “fish in the stones

The hydrogen sulfide then reacts with oxygenated groundwater to form elemental sulfur

4.3" Colonial Rugose Coral Fossil Devonian Age Speed Quarry, Clark County, Indiana Grape Agate dense minerals such as orthopyroxeneLocation: 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,