large carnivorous bipedal dinosaur having enormous teeth with knifelike serrations; may have been a scavenger rather than an active predator; later Cretaceous period in North America

Tyrannosaurus rex was a large carnivore.

霸王龙是一种大型肉食动物。

We performed multiple analyses of Tyrannosaurus rex (specimen MOR 1125) fibrous cortical and medullary tissues remaining after demineralization.

我们对霸王龙化石(标本mor 1125)脱矿质后残留的纤维皮质和髓质组织进行了复杂的分析。

A Tyrannosaurus rex model at the Natural History Museum in London.

伦敦自然历史博物馆的霸王龙模型。

The feathers most likely belonged to a baby nonavian theropod, meaning it looked more similar to a velociraptor or Tyrannosaurus rex than to a modern bird.

这些羽毛极有可能属于一只年幼的非鸟兽脚类恐龙，意即样子更接近伶盗龙或者暴龙，而非现代鸟类。

Among its collection are the skeletons of a Tyrannosaurus rex and triceratops, and the most complete remains of a dodo found anywhere in the world.

在其收集是一个暴龙和三角龙的骨架，最完整的一渡渡鸟仍然发现任何地方世界。

New fossil evidence supports that Tyrannosaurus rex was a cannibal.

新发现的化石证明霸王龙残食同类

Tyrannosaurus rex arose during the Cretaceous period about 85 million years ago and thrived as a top land predator until the dinosaurs went extinct 20 million years later.

霸王龙出现，在白垩纪时期约85万年前，和蓬勃发展作为最高的土地捕食，直到恐龙灭绝二千万年后。

The pliosaur「s head was twice as big as that of a Tyrannosaurus rex and was filled with an impressive set of 12-inch teeth.

这只上龙的头比霸王龙的大一倍，满口是令人印象深刻12英寸长的巨齿。

All these feather types have been found in fossil impressions of theropods, the dinosaur suborder that includes Tyrannosaurus rex as well as birds and other Maniraptorans.

所有这些羽毛类型在兽脚亚目的印痕化石中都被找到了，兽脚类属于恐龙亚目，包括了雷克斯霸王龙、鸟类以及其他手盗龙。

The discovery overturns scientists」 thinking about how Tyrannosaurus rex evolved.

这一发现推翻了科学家们对霸王龙进化过程的假设。