Origins of sex discovered: Side-by-side copulation in distant ancestors
Monday, October 20, 2014 - 12:31
in Paleontology & Archaeology
A palaeontologist has revealed how the intimate act of sexual intercourse first evolved in our deep distant ancestors. In one of the biggest discoveries in the evolutionary history of sexual reproduction, scientists have found that internal fertilization and copulation appeared in ancient armored fishes, called placoderms, about 385 million years ago in what is now Scotland.