Trilobite in Shale (Elrathia sp.) - Utah This is described as twinning

This is described as twinning

This variety of calcite was first discovered in Tuscany

Chemical Formula: R3R2(SiO4)3  (R = Various elements that contribute to the species of garnet

There is one hairline fracture near the tip of the tooth that was likely stabilized

Stone: Carnelian

Trilobite in Shale (Elrathia sp.) - Utah This is described as twinningTrilobites are considered one of the most successful groups of animals to ever live on planet Earth. They lived for over 300 million years and there have been more than 20,000 different species identified. These creatures are members of the phylum Arthropoda. These animals are classified as having segmented bodies with an exoskeleton to protect their organs and muscles. Living examples include insects, spiders, crabs, lobsters, scorpions, and