Many people wonder why the dinosaurs are always represents no genitals. "
The answer is simple: because it is unknown how they were. Some mammals have a small bone in the penis called baculum. But it is usual that the sexual organs are composed of soft tissues rarely fossilize. This is what happens to human genitals and also with those of dinosaurs.
”The remains of the genitals of these creatures have been preserved,” says José Carlos García Ramos, scientific director of MUJA. ”Therefore, there is no evidence that lets us know whether or not they had a penis.” But if they did not, what was his reproductive organ? It seems that one called cloaca. There is growing evidence that modern birds are the closest living relatives to dinosaurs. Most of them lack a penis, and instead have cited cloaca, a cavity in which the confluence of the urinary tract and reproductive system. To copulate, couple copies of their respective holes in an operation that biologists call “cloacal kiss.”When the male receives the necessary injection of blood in that area, the muscles of the cloaca suffer a spasm that project the semen into the female. ”Birds provide clues to speculate on the dinosaurs,” says Fidel Torcida, paleontologist and director of the Dinosaur Museum of Castilla y León. ”Given that both species are related, if the birds breed in this way, it is logical to believe that their Jurassic ancestors did the same way.” The thesis of the sewer is the most widely consensus, but there are also supporters of the theory of the penis. As Britain’s Olivia Judson, evolutionary biologist and historian, who says: “Places to ramble, there are indications that many dinosaurs had penis to say no.” The expert believed that males had a seudopene. In explanation, part of that modern birds fall into two groups: Paleognathae and Neognathae.”Members of the first, like ostriches, have a body like a phallus,” said Judson. ”It is hidden in the gutter, but I take abroad to mate.” Judson believes that the ancestors of birds had it at first, but, at some point in evolution, he lost Neognathae branch.