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Contact: Glenn Harris
G.Harris@soton.ac.uk
44-023-805-93212
University of Southampton
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
Usage Restrictions: None
Related news release: Survival of the prettiest: Sexual selection can be inferred from the fossil record
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