An international team of researchers from Belgium, France, Switzerland, Spain and the U.S. has reconstructed the evolution of body mass in carnivorous mammals during the Paleogene—a crucial window in ...

A Neanderthal-derived growth hormone receptor still carried by some people today appears to amplify growth-related signals in cells.

Some cynodonts may have been giving birth to live young much sooner in evolutionary history than previously assumed. A new ...

The microscopic structure of fossilized bones helps solve ‘inscrutable mystery’ about the reproduction of ancestor of true ...

Scientists may have uncovered evidence that a mammal ancestor was giving birth to live young 236 million years ago. A fossilized cynodont showed a neonatal growth line and an unusually large birth ...

Growth rings on a fossil bone suggest at least one mammal ancestor gave birth to live young rather than laying eggs 236 million years ago.