Why is the spinosaurus considered to have a sail?

Spinosaurus was the only large, meat-eating dinosaur to be equipped with a prominent sail. The question is, why? read more

The function of Spinosaurus' sail is a continuing mystery, but paleontologists have narrowed the field down to four plausible explanations: 1) The sail was all about sex. The sail of Spinosaurus may have been a sexually selected characteristic--that is, males of the genus with bigger, more prominent sails would have been favored by females during mating season. read more

Finally, Spinosaurus could have used its sail as a display organ to discourage others of its species from coming to the area it was in. The sail would not disturb the fish it preyed on, making it a perfect display organ for such an animal. read more

There are a lot of possibilities, and I’m certain that thermoregulation would be an important function of Spinosaurus’s sail. However, given the sheer size of the structure, I tend to lean towards another prime function: Sexual display. read more