Harpactognathus. A pterosaur in the Rhamphorhynchidae family. It was quite large for its family, with a wingspan of about 2.5 meters. Like many Rhamphorhynchidae pterosaurs, Harpactognathus fed on fish, catching them from the water. The crest on its head may have made fishing easier. The crest may also have been used for displays during mating season

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