WOODS HOLE, Mass.—Two new studies on the evolutionary origin of teeth and of vertebra further illuminate the human connection to marine organisms that goes back millions of years. Both studies in the little skate (Leucoraja erinacea) are published this week by Andrew Gillis and Katharine Criswell of the University of Cambridge, U.K., who conduct research as Whitman Center Scientists at the Marine Biological Laboratory (MBL), Woods Hole.
