Teeth originated in an armored ray that swam the oceans 100 million years ago, according to new research, carried out by a scientific team at Penn State University in the U.S. Undated photo. (SWNS/Newsflash)
All Teeth Come From Single Ancient Sea Predator, According To New Study
Teeth originated in an armoured ray that swam the oceans 100 million years ago, according to new research. They evolved from jagged spikes along the snout of the primitive sea…
