amnhnyc: Trilobites first appeared in the ancient seas approximately 521 million years ago, during the Cambrian Explosion. What did the earliest trilobites look like? This slightly disarticulated example of Fallotaspis sp. from the Lower Cambrian soils

amnhnyc: Trilobites first appeared in the ancient seas approximately 521 million years ago, during the Cambrian Explosion. What did the earliest trilobites look like? This slightly disarticulated example of Fallotaspis sp. from the Lower Cambrian soils

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