1.9" Symphysurus Trilobites With Preserved Antennae & Gut Trace

Symphysurus Trilobites With Preserved Antennae & Gut Trace #213186

This is a 1.9" Symphysurus trilobite with both antennae preserved. Preservation of soft parts on trilobites is extremely rare, but they are occasionally found in the Fezouata Formation of Morocco. This is one of the better Symphysurus I've seen with antennae.

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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