An international team of researchers has examined bite marks on several seven-million-year-old skulls from extinct whales, ...

But they do have a cartilage skeleton, a shark-like skull and jaw, and at least some shark-like teeth, which were often fused together.' By the middle of the Devonian (380 million years ago), the ...

But first, in 2008, a team of Australian scientists led by Steve Wroe used sophisticated computer modeling based on multiple x-ray images of shark skulls to estimate that a 21-foot great white ...

Forest veterinary doctors who conducted the necropsy have collected samples of heart and muscle for a detailed ...