The Comb Jelly (ctenophora), a marine invertebrate ranging from a few millimeters to 1.5 m (5 ft) in size. Fossils representing ctenophores appear in sedimentary deposits dating back to the early Cambrian, about 525 million years ago. Some propose it was

The Comb Jelly (ctenophora), a marine invertebrate ranging from a few millimeters to 1.5 m (5 ft) in size. Fossils representing ctenophores appear in sedimentary deposits dating back to the early Cambrian, about 525 million years ago. Some propose it was