Published: July 11, 2011

Science at FMNH : Ep. 15 - Trilobite Evolution

Approximately 515 to 495 million years ago, western Utah and eastern Nevada were covered by shallow seas.  The rock record shows that the trilobites in this area were changing as the depth of the seas increased.

Science at FMNH – Trilobite Evolution

Approximately 515 to 495 million years ago, western Utah and eastern Nevada were covered by shallow seas.  The rock record shows that the trilobites in this area were changing as the depth of the seas increased.

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