The newly discovered species, Prosaurosphargis yingzishanensis, grew to around 5 feet long and was covered in bony scales called osteoderms.
An extinct, 250 million-year-old marine reptile that was covered in bony armor and swam in the shallow waters of what is now south China could rewrite the family tree of armored marine reptiles and hint at why they first emerged, a new study shows.
P. yingzishanensis likely grew to around 5 feet long and was covered in osteoderms — bony scales and plates found in many living reptiles, armored dinosaurs and some mouse tails. It was likely"one of the bigger marine reptiles" living in its ecosystem at the time, study lead author Andrzej Wolniewicz, a paleobiologist at Hefei University of Technology in China and the Polish Academy of Sciences, told Live Science in an email.
Saurosphargids have long been considered a sister family of the sauropterygians, a more diverse group of extinct marine reptiles including armored turtle-like creatures called placodonts and long-necked predators such as plesiosaurs.
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