0.9" Elrathia Kingi Trilobite Fossil Utah Cambrian Age 521 Million Years Old COA

Location: Utah House Range - Antelope Springs, Millard County Weight: 0.2 Ounces Dimensions: 0.9 Inches Long, 0.7 Inches Wide, 0.2 Inches Thick Comes with a free Certificate of Authenticity.  The item pictured is the one you will receive. Elrathia Kingi Trilobite Trilobites are a group of extinct marine arthropods classified in the class Trilobita. They are among the earliest known arthropods. The first appearance of trilobites in the fossil record marks the beginning of the Atdabanian stage of the Early Cambrian period, about 521 million years ago. These creatures had hard shells and segmented bodies and lived in Earth's ancient seas. They are considered some of the earliest complex life forms on our planet and serve as key indicators of the Paleozoic Era. Trilobites went extinct before the dinosaurs ever appeared. Trilobites were the first animals to have a skeleton (exoskeleton), which made them easy to fossilize. Their shells are divided lengthwise into three lobes—hence the name