Stegosaurus plates may have differed between male, female

Stegosaurus, a large, herbivorous dinosaur with two staggered rows of bony plates along its back and two pairs of spikes at the end of its tail, lived roughly 150 million years ago during the Late Jurassic in the western ...

The evolution of plumage patterns in male and female birds

(Phys.org) —Research published today looks at the evolutionary pathways to differences in bird plumage patterns between males and females – and concludes that birds are able to adapt their appearance with remarkable ease.

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