This site is a general introduction to pterosaurs. Ranging from the size of a sparrow to the size of an airplane, the pterosaurs (Greek for "wing lizards") ruled the skies in the Jurassic and Cretaceous, and included the largest vertebrate ever known to fly: the late Cretaceous Quetzalcoatlus. The site has photographs, illustrations, and numerous active links that lead to detailed information on the subject.
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Subject: Biology Resource Type: Audio/Visual:Images/Illustrations, Scientific Resources:Overview/Reference Work Grade Level: College Upper (15-16), College Lower (13-14), High School (9-12) Focus on the Cretaceous: Paleontology Topics: Biosphere, Time/Earth HistoryKeywords: convergent evolution, Pteranodon