Scientists spot first known fossilized dinosaur “belly button”
In drawings or renderings of dinosaurs, we generally don't see the beasts sporting human-like belly buttons. The reptiles did have an equivalent to a navel, however, and scientists have recently discovered the first known fossilized example of one.In people and other mammals, the belly button is a scar that remains at the point where the umbilical cord was connected to the fetus' body.Even though dinosaur embryos weren't attached to an umbilical cord per se, they were directly attached to their egg's yolk sac via a…