Echinoderm fossil unearthed in Morocco is 520M years old

06/26/2013 | LiveScience.com

Paleontologists unearthed a 520 million-year-old cigar-shaped fossil in Morocco that is an ancient member of the echinoderm phylum, which includes starfish and sea urchins. The creature could expand and contract to form different shapes, and used five groove-like ambulacra to catch food floating through the water. It is the oldest known echinoderm with five ambulacra ever discovered, study co-author Andrew Smith said.

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