3.3" Colonial Rugose Coral Fossil Devonian Age Speed Quarry, Clark County, Indiana

Location: 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 period—410 million years ago—corals entered the oceans with remarkable force, creating Earth's first large reef systems. These pioneering underwater organisms included stromatoporoids that built reef bases, tabulate corals with branching, sculptural growth, rugose corals with horn-like shapes, and brightly colored coralline algae ancestors that painted ancient seabeds. As the period progressed, scleractinian corals appeared—today's main reef builders. However, ambition brought disaster. Around 350 million years ago, corals disappeared in a major extinction event, probably caused by extreme sea-level changes and a sudden drop in atmospheric carbon dioxide. Hold this remarkable fossil and reflect on the wild story of life's boldest efforts and greatest losses.