Summary

The Late Triassic seas contained a multitude of marine reptiles, but lurking on the sea floor was something different: a marine amphibian. A fossil of the large, bottom-dwelling ambush predator discovered in China is the first evidence that amphibians once found a way to adapt to life in the ocean. Named Gerrothorax maritimus , the near-perfect and exquisitely preserved 74-centimetre-long fossil was found by farmers in what is now a national geopark in Guanling county, China.

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