Evolution made some mollusks wormy
A new fossil may end a long-running debate about mollusks: Which evolved first, shelled forms like clams and snails, or their shell-less, worm-like relatives?
“This is a kind of missing link with a worm-like body, bearing a series of shells like those of a chiton or coat-of-mail shell,” says Derek E. G. Briggs, director of the Yale Peabody Museum of Natural History.
Full story at Futurity.
Photo credit: Mark Sutton
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