Thought to be slightly larger in size than the Tyrannosaurus (though estimates do vary), it competed with the equally impressiveSouth Americanbeast, the Giganotosaurus, for the title of the largest ever land predator at around 40 to 60 feet tall. While some species thrived on being as small...
the semi-aquaticSpinosaurusis the longest. The dinosaur was found in North Africa in about the same period as Giganotosaurus. This theropod was estimated to grow over 46 feet in
was very big, it had tall spines on its back, forming a magnificent sail, and it had long, slender jaws, a bit like a crocodile, with conical teeth, that may have been used to catch slippery prey, like fish. But that was pretty much all we knew about this animal for ...
It's one thing to know that a dinosaur was 40 feet long and weighed seven tons, and another to grasp just how enormous that was compared to the average full-grown human. This photo gallery will show you just how enormous some prehistoric animals were!
(adj. 有重大意义或影响的) conclusion that the spinosaurus may have been the largestcarnivorousdinosaur to ever live. Its crocodile-like head,dense bones(密质骨), short legs, and wide, paddle feet suggest it was a water dweller unlike any other. “The entire skeleton has water-loving river ...
Standing over five metres (16.4 feet) tall and 12 metres (39.4 feet) long, and weighing a staggering seven tons (15,400 pounds), T-rex was once thought to have been the largest terrestrial carnivore in history, but subsequent discoveries of fellow titans Carcharodontosaurus, Giganotosaurus and...