PHILADELPHIA – Researchers from the University of Pennsylvania School of Veterinary Medicine have discovered a unique evolutionary link between the immune systems of fish and mammals in the form of a ...

Researchers have traced cell origins critical to vertebrate evolution by studying a group of primitive, bloodsucking fish called lampreys. When you purchase through links on our site, we may earn an ...

The T-rex makes a rather unexpected sound whenever it bites down in Primitive War. Here's how it was informed by director Luke Sparke's real-life experiences.