3.9" Colonial Rugose Coral Fossil Devonian Age Speed Quarry, Clark County, Indiana Perisphinctes while its highly transparent varieties

while its highly transparent varieties have been applied in the manufacture of gun sights and polarizing microscopes for geological studies

In jewelry and decorative arts

making this specimen a fascinating example of nature’s subtle variations

with notable discoveries along Florida’s Withlacoochee River

3.9" Colonial Rugose Coral Fossil Devonian Age Speed Quarry, Clark County, Indiana Perisphinctes while its highly transparent varietiesLocation: Speed Quarry, Clark County, Indiana Weight: 3 Ounces Dimensions: 3. 9 Inches Long, 2. 1 Inches Wide, 1. 8 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,