Permian Fossil is Earliest Evidence of Rib-Powered Breathing

Paleontologists have examined 289-million-year-old specimens of the early reptile Captorhinus aguti that preserve a covering of three-dimensional skin, a complete shoulder girdle and ribcage with cartilages, and protein remnants that predate the previous oldest-known example by nearly 100 million years.

The post Permian Fossil is Earliest Evidence of Rib-Powered Breathing appeared first on Sci.News: Breaking Science News.