It is often said that nature is red in tooth and claw — that’s readily apparent from a viewing of Ocean Predators — but that hasn’t always been the case. Life has existed on our planet, in one form or ...

Scientists have long debated the origins of teeth. Did they evolve from body scales that migrated into the mouths of ancient vertebrates and became adapted for eating -- an idea known as the ...

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Yara Haridy, an evolutionary biologist at the University of Chicago, likes to stun people by telling them that our skeletons evolved from a jawless fish. “Much of what we have today has been around ...

Sharks have amazing skin. Instead of rounded scales like you would find on a trout, sharks have thousands of tiny tooth-like scales called dermal denticles, a fancy way of saying “skin teeth.” Like ...