Pirania

by: Walter B. Myers/Novapix
Reference: t-glb99-00042
Date: 2011-11-20

A species of Pirania, a primitive sponge that populated the ocean floors about 505 million years ago. The stems were hollow with bunches of long spicules attached to them.
Based upon a sketch reconstruction by J.K. Rigby from the book, The Burgess Shale by Harry B. Whittington.

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