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.
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