XL 1.5" Elrathia Kingi Trilobite Fossil In Matrix House Range Utah Cambrian Age COA

Location: Utah House Range - Antelope Springs, Millard County

Weight: 9.6 Ounces 

Dimensions: 4.6 Inches Long, 3.6 Inches Wide, 0.8 Inches Thick (Plate)

Trilobite is: 1.5 Inches Long, 1.1 Inches Wide

Comes with a free Certificate of Authenticity. 

The item pictured is the one you will receive.

Elrathia Kingi Trilobite

Trilobites are an extinct class of marine arthropods that first appeared approximately 521 million years ago during the Early Cambrian period, marking the start of the Atdabanian stage. As some of the earliest complex animals on Earth, they thrived in the ancient oceans of the Paleozoic Era and disappeared long before the age of dinosaurs.

These animals were encased in a rigid, segmented exoskeleton, which made them highly preservable as fossils. Their bodies were divided into three longitudinal lobes—a central axial lobe flanked by two pleural lobes—giving them their name, trilobite, meaning “three-lobed.”

The trilobite body is organized into three main regions:

• Cephalon (head): Contained compound eyes, mouthparts, and sensory antennae

• Thorax (middle): Comprised 2 to 61 articulated segments, allowing flexibility for movement and defense

• Pygidium (tail): Fused segments forming a protective tail shield

Trilobites inhabited a wide variety of marine habitats, from shallow seas to deep ocean floors. Their abundant and well-preserved fossils provide essential insight into early arthropod evolution, Cambrian biodiversity, and Paleozoic marine ecosystems, making them one of the most iconic and studied groups of prehistoric animals.

Please be aware of the nature of fossils:

Being buried underground for millions of years under immense pressure can be tough. Usually, fossils do not emerge in perfect condition; many require restoration, and some are even altered by people to improve their appearance. In the United States, workers perform this work very professionally, carefully unearthing and preserving these natural treasures.