Sharks have large livers filled with low-density oils that also help with this. As well as being flexible, their skeletal structure helps give some species of shark a powerful bite. Their upper jaw is ...
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 ...
Snapping turtle - Otic notch at back of skull allows anterior expansion of jaw muscles. ‘Modified anapsid’ condition increases power of bite. Holes arose in dermal roof, muscles pass through roof to ...
Researchers presented the ancient shark’s remains in several glass urns, including one containing a giant, sharp-toothed jaw. “There are not many complete (shark fossils ... In April 2024, researchers ...