Click above to listen to part 2 of Shell on Earth, featuring Al Tanner, Ph.D. student in paleobiology at the University of Bristol, U.K., explaining why cephalopods, unlike their other mollusk relatives, evolved to be shell-less.
Shell on Earth:
Part 1: Rowan Lockwood / Oyster Paleobiology
Part 2: Al Tanner / Naked Cephalopods
Part 3: Mike Brown / Earth’s Shell







