兽脚亚目

但这并不能完全解释兽脚亚目食肉恐龙的缺位。

But that does not completely explain the absence of theropod tracks .

这项惊人的发现展示了一只非鸟类的兽脚亚目恐龙覆着羽毛的尾巴，而这只恐龙在9900万年前就灭亡了。

The incredible discovery reveals the feathered tail of a non-avian theropod that perished approximately 99 million years ago .

这是一种兽脚亚目肉食恐龙。

The type of dinosaur that was found is known as a theropod .

已灭绝的陆地爬虫动物；兽脚亚目恐龙（食肉）；蜥脚类动物（食草）。

Extinct terrestrial reptiles : theropods ( carnivorous ); sauropods ( herbivorous ) .

这些恐龙经常被兽脚亚目食肉恐龙捕食。

Frequently , these were taken by theropods .

在那样一种环境下，即便是一头巨大的兽脚亚目食肉恐龙也会不时回头张望。

In that sort of environment even a big theropod would constantly have been looking over its shoulder .

体形较小的兽脚亚目食肉恐龙。两栖类四足食草恐龙，颈长而细，鞭形尾；白垩纪主要生活在南半球。

Amphibious quadrupedal herbivorous dinosaur with a long thin neck and whiplike tail ; of the Cretaceous mostly in the southern hemisphere .

兽脚亚目恐龙在逃跑时会特别困难，因为这种恐龙只使用后腿运动，艾伯斯说。

Theropods in particular would have had a tough time escaping , since the dinosaurs used only their hind legs for locomotion , Eberth said .