Definition: Nothosaurus is a genus of dinosaurs from the Late Cretaceous period (about 68 to 60 million years ago) in North America. It was one of the most widespread and iconic dinosaur species, with several different genera that coexisted during the same time period. The exact age of Nothosaurus is not well-determined, but it is estimated that they lived from about 74 to 68 million years ago. They were a large herbiv
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