Sand Dollar - Clypeaster sp.

Echinoderms Natural History Museum

Clypeaster Echinoid Fossil

Sea Wonder: Sand Dollar National Marine Sanctuary Foundation

Clypeaster hi-res stock photography and images - Page 2 - Alamy

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

Fossil Sand Dollars - Stock Image - C009/3869 - Science Photo Library

Fossil Sea Urchin Exoskeleton - Wunderkammer - Clypeaster Cipollae

Sand Dollar - Facts and Beyond

Fossilized Sand Dollar (030521e) - The Stones & Bones Collection

Natural Irregular Sea Urchin Clypeasteroida Petrified Sand Dollar