Crinoid Fossil Plate - 3.430" rockinaboxromanglassfragment earning the Constitution its nickname:

earning the Constitution its nickname: Old Ironsides

46" sample of Red Planet Obsidian set into a sterling silver bezel

at least according to the label

75" Maiasaura Vertebra recovered from private land on the Two Medicine Formation in Montana

Each Rockhound Mystery Box includes four geologic items

Crinoid Fossil Plate - 3.430" rockinaboxromanglassfragment earning the Constitution its nickname:Crinoids are an incredible group of aquatic animals that attach themselves to the seafloor and filter feeds with beautiful feathered arms. These creatures are echinoids, an ancient and varied group of life. Crinoids emerged in the fossil record over 541,000,000 years ago and some species still exist to this day. This specimen is a 3. 430" crinoid fossil plate that dates to about 323,000,000 to 331,000,000 years old. It comes from the Bangor Limestone