Research on fossilized fish from the late Devonian period, roughly 375 million years ago, details the evolution of fins as they began to transition into limbs fit for walking on land. Much of the ...

Other features in T. roseae, like the short, straight hyomandibula, show morphology intermediate between the condition observed in more primitive fish and that observed in tetrapods. The combination ...

From a Hercules beetle tough natural armor to a sea anemone’s soft fluid-filled body, nature boasts a variety of skeletons. A circa-1910 x-ray photograph of pot-bellied seahorses shows their ...

Do sharks have bones? It’s a question that often comes up in trivia quizzes. The implication that an apex predator could be ...