Like sea stars, ancient echinoderms nibbled with tiny tube feet

Rare 430-million-year-old fossils preserve signs of these tentacle-like limbs

sea star tube feet

MULTI-PURPOSE FEET  Tiny tube feet extend from this sea star’s arm. Uncommonly well-preserved fossils of an ancient relative of this echinoderm show it also had an array of these tentacle-like appendages.

Dan Bagur/Shutterstock

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