Scutella sand dollars - Stock Image - C039/4773 - Science Photo Library

Scutella is an extinct genus of flat, marine sea urchins in the family Scutelleridae, that lived during Oligocene to Quaternary times. They belong to the order of Clypeasteroida, of which many similar species live up to present times. DIRK WIERSMA/SCIENCE PHOTO LIBRARY

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Live Sand Dollars on Exhibit at California Academy of Sciences

fossil sand dollar - Keyword Search - Science Photo Library

Sand dollar fossil hi-res stock photography and images - Alamy

Sand dollar fossil hi-res stock photography and images - Alamy

Live Sand Dollars, Most people probably don't realize that …

Sand dollar fossil hi-res stock photography and images - Alamy

Sand dollar fossil hi-res stock photography and images - Alamy