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Duotone panel — violet briefing on the left, lime-sealed detail sheet on the right.
85 - 66 Million Years old
With a Mohs hardness of 3
Known for its distinctive green coloration and prismatic crystal habit
a vast inland sea that once stretched across central North America during the Cretaceous
smaller whales
3.3" Colonial Rugose Coral Fossil Devonian Age Speed Quarry, Clark County, Indiana Gastropod 85 - 66 Million YearsLocation: Speed Quarry, Clark County, Indiana Weight: 2. 6 Ounces Dimensions: 3. 3 Inches Long, 2. 1 Inches Wide, 1. 7 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,