Trilobite - SOLD 1.409" Devonian Fossil protomammal the shells of ammonites had

the shells of ammonites had an inner layer known as the nacre or "mother of pearl"

and like any human endeavor

Like many modern herbivores

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Trilobite - SOLD 1.409" Devonian Fossil protomammal the shells of ammonites hadThe Cambrian Explosion brought new life and diversity to the ocean. 521,000,000 years ago, the first trilobites emerged in the fossil record thanks to this evolutionary event. With a tough exoskeleton, trilobites were one of the earliest known arthropods and quickly spread across the planet thanks to their incredible adaptability. This specimen is a complete 1. 409" Devonian Period trilobite fossil. It comes from Morocco and is dated to be around 380