Alisha’s trilobite jewelry designs feature Elrathia Kingi Trilobites from Utah. Sourcing the right size and quality is challenging and Alisha chooses the finest specimens available. Each specimen has its unique characteristics and time worn imperfections. (You would too if you were 65 – 300 million years old.) There are over 20,000 trilobite species and the fossils are found on every continent on earth. They are extinct arthropods, a distant relative to horseshoe crabs, spiders and lobsters.