The Tyrannosaums rex, also called T. rex, is known for being king of the dinosaurs.However, dinosaurs in the same family weren't always such huge beasts. Early ancestors of the T. rex were pretty tiny, scientists say.Scientists have identified a new cousin of the T. rex. This dinosaur...
studies and fossils, the study strikes down a fundamental split of dinosaurs into "bird-hipped" and "reptile-hipped"; it also shifts the charismatic theropods—the group that includes Tyrannosaurus rex and eventually gave rise to birds—to a new spot on the tree, closer to the bird-hipped ...
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If a controversial new study is right, famous fossils such as Sue and Stan aren’t T. rex after all. But leading experts are highly skeptical.
A new study gives the long-standing dinosaur family tree an overhaul. Based on analyses of hundreds of traits gleaned from existing studies and fossils, th... C Gramling 被引量: 0发表: 2017年 T. Rex Look-Alike Unearthed in Patagonia What had two puny arms, lived 90 million years ago ...
The Cretaceous predator, Meraxes gigas, hints that giant carnivores may have had more uses for their comically small forelimbs than previously thought.
Cullen found that the dinosaurs’ growth patterns depended on their family.T. rexand its relatives, the coelurosaurs, showed a period of extreme growth during adolescence, and then they petered out once they reached adulthood. SUE theT. rexlived to be about 33 y...
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could have helped it hunker down in one spot and wait for prey to swim by. “It probably would have spent a lot of time near the bottoms of rivers and lakes, lunging out and eating whatever it liked,” says Otoo. “You definitely could call this thing ‘theT. rexof its time.’”...