where Hexagonaria percarinata is known as the Petoskey stone
Fossil Locations: North America (Pangaea regions)
where they occur in a variety of fossil-bearing formations such as limestone and dolostone
later being ejected by impacts and eventually reaching Earth
a testament to their evolutionary success
4.1" Thamnopora SP Coral Fossil Coral Reef Devonian Age Verde Valley, Arizona Grape Agate where Hexagonaria percarinata is knownLocation: Martin Formation, Verde Valley, Arizona, United States Weight: 9 Ounces Dimensions: 4. 1 Inches Long, 2. 8 Inches Wide, 1. 8 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