Four hundred million year old fish fossil has earliest example of teeth

(—A pair of researchers, one with the Naturalis Biodiversity Center in the Netherlands, the other with the University of Bristol in the U.K. has found what appears to be the earliest known example of a creature sporting teeth. In their paper published in The Royal Society’s Biology Letters, Martin Rücklin, and Philip Donoghue describe their work in examining the fossilized tooth plate of an ancient fish. —> Read More