Study of fossils shows prehistoric fish had sex

BANGKOK, Thailand – The fossilized remains of two pregnant fish indicate sex as we know it – fertilization of eggs inside a female – took place as much as 30 million years earlier than previously thought, researchers said Thursday.

Scientists from Australia and Britain studying 380-million-year-old fossils of the armoured placoderm fish, or Incisoscutum richiei, said they were initially confused when they realized the two fish were carrying embryos. They originally thought the fish laid their eggs before fertilization.

Source: cnews.canoe.ca