Feb. 28, 2013 | 7:00 a.m.
If you thought the Creature from the Black Lagoon was terrifying, check out the new artist renderings of the Helicoprion–a giant shark-like animal that swam the seas roughly 270 million years ago. What sets the Helicoprion apart from any other animal known to swim, walk or fly on Earth, is its terrifying teeth: Fossils show that the Helicoprion had up to 150 thin, sharp, serrated teeth that spiraled around each other. The smallest teeth are in the middle of the spiral, which looks a bit like a buzz saw. For more than a century, Helicoprion fossils have baffled scientists who were unclear where on the animal the crazy tooth spiral belonged. Was it on the tip of its nose? Or part of a sharp dorsal fin? Or did the animal wield it like a weapon on its tail? Paleontologist Leif […]