Sharks’ non-bony skeletons had been considered to be the template before bony interior skeletons developed, but a unique fossil development implies otherwise.

The breakthrough of a 410-million-year-old seafood fossil with a bony skull implies the lighter skeletons of sharks might have evolved from bony ancestors, as opposed to the other means around.

Sharks have skeletons made cartilage, which is around half the thickness of bone tissue. Cartilaginous skeletons are recognized to evolve before bony people, however it had been thought that sharks split off their animals regarding the evolutionary tree before this occurred; keeping their cartilaginous skeletons while other fish, and finally us, continued to evolve bone.

Now, a team that is international by Imperial university London, the Natural History Museum and scientists in Mongolia can see a seafood fossil by having a bony skull that is a historical cousin of both sharks and pets with bony skeletons. Continue reading →