Scientists studied how the sea creatures, also known as chimaeras or ghost sharks, ended up with one of evolution’s most bizarre appendages. By Jack Tamisiea Life in the ocean’s dark depths can be ...

In the history of teeth, perhaps no tooth is as famous as the saber tooth. These long, blade-like canines seem almost perfectly optimized to kill prey. They've evolved at least five times in mammals, ...

Researchers believe the creature, named Nihohae matakoi, used its horizontal teeth to thrash at prey before gulping it down. When you purchase through links on our site, we may earn an affiliate ...