BANGKOK, ThailandBANGKOK, Thailand — The fossilized remains of two pregnant fish indicate that sex as we know it – fertilization of eggs inside a female – took place as much as 30 million years ...

Prehistoric fish had sexual reproduction figured out 380 million years ago, a new fossil study has confirmed. Researchers examined the fossil of one species of armored placoderm fish and realized that ...

The fossilized remains of two pregnant fish indicate that sex as we know it - fertilization of eggs while they are still inside a female - took place as much as 30million years earlier than previously ...

Scientists estimate more than 99 per cent of all species that have ever existed on Earth are now extinct. Only a handful of them have been preserved as fossils. Fossils are ancient organisms’ ...

When an Australian scientist uncovered an ancient-looking placoderm skull in the 1960s, he thought he'd cracked the code on an evolutionary mystery. This so-called 'platypus fish,' scientists had ...

Sydney, Oct 20 (EFE).Sydney, Oct 20 (EFE). — Copulation and the internal fertilization of eggs for reproduction originated among prehistoric fish called placoderms about 385 million years ago, a group ...

Australian researchers have discovered a remarkable 380-million-year-old fossil placoderm fish with intact embryo and mineralized umbilical cord. The discovery makes the fossil the world's oldest ...