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The newly-found fossils are 209 million years old and include pterosaurs, primitive frogs and lizard-like reptiles ...
Along with the pterosaur were other new arrivals on the scene including ... “Although dinosaurs are found in contemporaneous rocks from Arizona and New Mexico, they were not part of this ecosystem ...
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 ...