As scientists discovered from the United States, the sex in the world has arisen 385 million years ago. Its sole purpose was reproduction.
turned out to be the first on the planet tried mating fish Microbrachius dicki. They were about eight inches in length and lived in the territory of what is now Scotland. According to experts, the sexual act took place by means of the L-shaped appendage of the male of the species, which was introduced into the structure at the back of the female.
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