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The newly-found fossils are 209 million years old and include pterosaurs, primitive frogs and lizard-like reptiles ...
Smithsonian scientists have uncovered North America’s oldest known pterosaur from a 209-million-year-old bonebed in Arizona’s ...
Paleontologists know the bone bed as PFV 393. The late fossil preparator Bill Amaral found the site in 2011 on a field trip ...