World's First Flowers May Have Bloomed Underwater

A fluffy, frondy plant that wouldn't look out of place in a lake today was one of the oldest flowering plants on Earth, new research finds. "It's a very, very early experiment or divergence in the sexual reproduction of flowering plants," Dilcher told Live Science. In other areas, Ceratophyllum fossils are found in the same rock layers as shelled animals called ammonites.