3.9" Thamnopora SP Coral Fossil Coral Reef Devonian Age Verde Valley, Arizona Serpentine With a robust hardness rating

With a robust hardness rating of 6 to 7 on the Mohs scale

they reveal a distinctive mottled pattern of fossilized corals

which is typical for quartz varieties

The lake once extended across roughly 930 square miles

3.9" Thamnopora SP Coral Fossil Coral Reef Devonian Age Verde Valley, Arizona Serpentine With a robust hardness ratingLocation: Martin Formation, Verde Valley, Arizona, United States Weight: 8. 5 Ounces Dimensions: 3. 9 Inches Long, 3. 1 Inches Wide, 2 Inches Thick Devonian Age 380 Million Years Old The item pictured is the one you will receive. Thamnopora SP Fossil Coral Around 410 million years ago, during the Devonian period, corals re emerged and began building the first large reef systems. These early reefs were bustling underwater communities, primarily formed