The beast, named Raptorex kriegsteini, roamed the Earth 130m years ago, tens of millions of years before the giant T-rex became the most fearsome predator in history.

这种被称为Raptorex kriegsteini的野兽在1.3亿年前曾生活在地球上，数千万年后才出现史上最可怕的食肉动物——巨型的霸王龙。

youdao

The Raptorex Kriegsteini reportedly was discovered inside a single piece of rock in the Inner Mongolia area of China.

VOA: special.2009.10.13

He helped write about Raptorex Kriegsteini with Paul Sereno of the University of Chicago, the lead writer and researcher.

VOA: special.2009.10.13

Professor Sereno says Raptorex Kriegsteini was probably just as effective at killing as T.Rex.

VOA: special.2009.10.13