3.2" Cambrian Trilobite (Hamatolenus) - Pos/Neg Split

Cambrian Trilobite (Hamatolenus) - Pos/Neg Split #222420

This is a positive/negative split of a bright orange, Middle Cambrian trilobite (Hamatolenus sp). The bright orange coloration is natural and due to the oxidization of iron pyrite. The back of the thorax and tail is still buried under rock. The exposed portion measures 2.6" long but the trilobite would likely be about 3.2". The positive side of the rock could be prepared to further expose the trilobite.

It comes with an acrylic display stand.

Trilobites were a very diverse group of extinct marine arthropods. They first appeared in the fossil record in the Early Cambrian (521 million years ago) and went extinct during the Permian mass extinction (250 million years ago). They were one of the most successful of the early animals on our planet: over 25,000 species have been described, filling nearly every evolutionary niche. Due in large part to their hard exoskeletons (shells), they left an excellent fossil record.

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