30-Year-Old Museum Rock May Hide a New Mosasaur Species

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Fossils newly identified in a rock collected 30 years ago in Osaka Prefecture may belong to a previously unknown species. For roughly 30 years, four mosasaur bones remained concealed inside a rock stored at the Natural History Museum, Kishiwada City. When researchers recently examined the unprepared specimen, they uncovered fossils unlike those of any mosasaur [...]