The Mezozoic era was about 252 million to 66 million years ago. This was the time of the really big dinosaur. But few measure up to what are called TITANOSAURS. Titanosaurs belonged to a group of ...

However, we now know that this dinosaur walked on all fours. The animal's spine would have been horizontal and the tail would have lifted off the ground. Modern reconstructions are also much slimmer ...

a life-sized cast of a 122-foot-long sauropod dinosaur, Patagotitan mayorum, discovered in 2014. Around the world, only about 80 Stegosaurus specimens have been acquired by scientific institutions ...

The American Museum of Natural History's famed dinosaur exhibits − further popularized by the 2006 movie "Night at the Museum" − contain the first Tyrannosaurus rex ever put on public display, as well ...