Footprints of primitive reptiles and amphibians from 280 million years ago

Posted by Washington Post: Juliet Eilperin on February 15th, 2016
ScienceDaily: The ichnites or fossilised footprints of the Manyanet Valley (within the municipality of Sarroca de Bellera) are in two areas that differ in their environments: meandering fluvial systems in one and unconfined waters in the other. These two palaeoenvironments would have been inhabited by groups of different tetrapods during the Permian Period. The early tetrapods (from the Ancient Greek word meaning "four-footed") were the first vertebrates to tread terra firma, developing lungs to capture atmospheric......

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