Two Hypothetical Silhouettes of the Male and Female <i>Stegosaurus</i> (IMAGE)
Caption
Some Stegosaurus had wide plates, some had tall, with the wide plates being up to 45 percent larger overall than the tall plates. According to a new study by University of Bristol, UK student, Evan Saitta, the tall-plated Stegosaurus and the wide-plated Stegosaurus were not two distinct species, nor were they individuals of different age: they were actually males and females. This is the first convincing evidence for sexual differences in a species of dinosaur.
Credit
Evan Saitta
Usage Restrictions
Image is for single use only to illustrate pieces on the PLOS ONE article 'Evidence for Sexual Dimorphism in the Plated Dinosaur Stegosaurus mjosi (Ornithischia, Stegosauria) from the Morrison Formation (Upper Jurassic) of Western USA' by Evan Saitta and is not to be archived. Please credit the copyright holder Evan Saitta
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