Extinct Fossil Crab in Monterey


Pinnixa galliheri, extinct shore crab, aguajito shale matrix, Jacks Peak County Park, Monterey County, California

During the Miocene Epoch (the first epoch of the Neogene period, the period before our current, Quarternary period), approximately 12 million years ago, the seas covering Monterey County began to recede and a small island appeared, the peak of that island today called Jacks Peak. The foundation of crustacean life in Monterey Bay today, kelp forests first appeared in the Miocene epoch, becoming one of Earth’s most productive ecosystems.

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