Normally, an animal can’t grow so old. Over time, declining bodily functions and illnesses like cancer accumulate and take their toll. Yet the Greenland shark seems to defy this pattern ...
An ongoing Paleontological Resource Inventory discovered the new species, called Clavusodens mcginnisi, while collecting ...
The shark's back teeth had flat crowns and long bases resembling old iron nails, which contributed to its common name. The front teeth were more chisel-like, suggesting a diversified diet.