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Contact: Glenn Harris
University of Southampton

Pterosaur Darwinopterus

Caption: The image shows sexual dimorphism in the pterosaur Darwinopterus. Males had large head crests while females were crestless. This dimorphism is a clear indication that sexual selection pressure was shaping the evolution of these animals.

Credit: Mark Witton

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Related news release: Survival of the prettiest: Sexual selection can be inferred from the fossil record

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