Micraster Sea Urchin

Micraster Sea Urchin

Micraster Sea Urchin
Micraster Sea Urchin (the featured image above) shows the top surface of the Micraster.

The image (left) shows the underside that was attached to the sea-bed.

Fossil size 2 1/2″ x 2 1/2″ inches.

The Cretaceous Period – 150 million years ago to recent.

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