Can we easily distinguish male and female protoceratops?

Anatomical and behavioral differences distinguish males and females in many extant and extinct animals. For instance, male peacocks have a large and flashy tail, whereas females are smaller and less brightly colored. Male lions have a mane and are larger than females. Red deer male sport antlers, lacking in females. This phenomenon is called sexual dimorphism and represents a product of sexual selection. It represents a key factor in the success of breeding within many species, as originally stated by Darwin, and mate choice.

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