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Ancient marine reptile

SciencePetroleum IndustryField Museum of Natural History
Fossil preparator James Holstein stands next to a 244-million-year-old fossil in a research area of the Field Museum in Chicago. He discovered the fossil, the Thalattoarchon Saurophagis, during an exploration with paleontologists in a remote mountain range in Central Nevada. The creature was... Alex Garcia, Chicago Tribune
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