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 that are classified in the class Trilobita. They represent one of the earliest known groups of 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 were hard-shelled, segmented animals that inhabited Earth's ancient seas. Considered among the earliest complex life forms on our planet, trilobites are also key signature creatures of the Paleozoic Era. They went extinct before the existence of dinosaurs. Trilobites were the first animals to develop a skeleton (exoskeleton), which made them easily fossilized. Their shells are divided lengthwise in