Spinosaurus was good at swimming?

An international research team, which was intermittently excavating fossil excavation of a large carnivorous dinosaur Spinosaurus in the desert of Morocco in North Africa, found a fossil of a wide tail in the up and down direction, 29th English scientific magazine Nature electronic version Announced. It is said that he was good at swimming from the land into the water, and it is thought that he caught fish and ate them.

Spinosaurus is a typical large carnivorous dinosaur along with Tyrannosaurus, and features a fan-shaped projection on its back when viewed from the side. So far, almost no fossil tail has been found, and it was debated whether it was a suitable body shape for swimming. The research team made a model of the tail and conducted an experiment to move it in an aquarium, and confirmed that the propulsive force was large.

 Fossils are young individuals before they are adults, and they were discovered in the stratum of nearly 100 million years ago (mid Cretaceous). At that time, many fossils of fish were found in the area of ​​the Taiga Delta. Spinosaurus inhabited and prospered all over the world for about 50 million years.