Why Don't Men Have Penis Bones?

Study Says Men Used to Have Penis Bones, but Then We Got Married
British researchers say evolutionary monogamy is the reason you lost your bone

• The penis bone - or baculum - has been described as the 'most diverse' bone
• The baculum first evolved in mammals between 145 and 95 million years ago
• Men no longer have a penis bone as they tend to be in monogamous relationships, and don't need to compete for a partner

Ever wonder why you don’t have a penis bone, even though you call your erection a 'boner'?
British researchers have finally figured out the answer: They say that men’s choice to be monogamous about 1.9 million years ago robbed them of their penis bones.
The new study examined the evolutionary progression of the baculum, or penis bone, in a variety of primates, who developed the bone 50 million years ago. After that, the baculum lengthened in some species, shortened in others, and for human beings, went away altogether.
The length of the baculum corresponds to the duration of a primate’s mating session-the longer they bone, the longer their bone. And a longer mating period was necessary for ancient guys to pass along their genes, lest another dude mate with their lady right after they finished.
When human beings stopped swinging and settled down, the baculum went the way of the dodo bird, as it was no longer a necessary appendage for a guy to pass on his genes. (Chimpanzees, for comparison, have a baculum the size of your fingernail.)
Before you get jealous of your monkey relatives, realize that adult male gorillas only have 1.5-inch penises, despite their bonus baculums.
Australian researchers think human beings conquered the penis pyramid because evolutionarily speaking, women were into guys with longer schlongs. (Though that isn’t the case anymore.)