Gerrothorax maritimus — fully marine armoured amphibian from Guizhou, China

A fully marine armoured amphibian that lived its whole life at sea, 237 million years old, from Guizhou, China, described in Nature Ecology & Evolution. Discovery announced 26 October 2026, reported 27 October, ScienceAlert updated 28 October 2026. News article: https://www.sciencealert.com/an-armored-amphibian-that-lived-its-whole-life-at-sea-its-a-fossil-first [https://www.sciencealert.com/an-armored-amphibian-that-lived-its-whole-life-at-sea-its-a-fossil-first] — Second image: holotype, belly side up, by Ryosuke Motani: https://www.sciencealert.com/images/2026/10/Image-2-433x675.jpeg [https://www.sciencealert.com/images/2026/10/Image-2-433x675.jpeg] — Image: artistic reconstruction by Chen Geng, Guizhou University.