该出土的暴龙种类名为Lythronax argestes，高2.4公尺，长8公尺，是雷克斯龙（Tyrannosaurus rex）亲属，目前在犹他州自然历史博物馆亮相。Lythronax意指“戈尔国王”（King of Gore）；argestes源于古希腊诗人荷马的一首诗歌。
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当检测到雷克斯龙模型以45英里/小时速度奔跑时，他们的计算显示它每条腿上的支撑性肌肉占整个体重的43%。
When they tested the model on a T. rex running about 45 mph their calculations showed it would have needed 43 percent of its body weight in each leg as supportive muscle.
结果，历经数百万年间的自然选择，形成了我们今日熟知的异特龙和雷克斯霸王龙族群。
The result, once natural selection had done its work over the course of millions of years, was the now familiar cast of Allosaurus and Tyrannosaurus rex.
史前人类从未向雷克斯暴龙扔过长矛，但确实猎杀过猛犸象和乳齿象。
Prehistoric humans never threw spears at Tyrannosaurus rex but really did hunt mammoths and mastodons.
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