The dolphin, Ankylorhiza tiedemani comb. n., was first discovered in fragments in the late 1800s, but the new, nearly complete find was discovered in the 1990s and pieced together over the decades.

If you've ever seen a dolphin swim, you may have wondered why they undulate their bodies up and down when swimming, instead of side to side as fishes do. Though they have a fishlike body, cetaceans (a ...

Prehistoric dolphins acted more like modern ... 15-foot skeleton of a dolphin, known as Ankylorhiza tiedemani comb. n., that had teeth. Its bone structure allowed it to operate like the ...