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, 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 dinos. The reorganization of the tree suggests that hypercarnivory evolved in different groups through convergent evolution, and may upend the picture of where dinosaurs arose. But don9t throw out your dog-eared dino books just yet, other researchers caution: This new family tree is likely to be debated for some time to come.

中文翻译：

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妈，他们把霸王龙放哪儿了？

一项新的研究对长期存在的恐龙家谱进行了彻底改革。基于对从现有研究和化石中收集到的数百个特征的分析，该研究将恐龙从根本上分为“鸟臀”和“爬行动物臀”；它还将具有超凡魅力的兽脚亚目动物——包括霸王龙并最终产生鸟类的群体——转移到树上的一个新位置，更接近鸟臀恐龙。树的重组表明，超级食肉动物通过趋同进化在不同的群体中进化，并可能颠覆恐龙起源地的图景。但是，不要立即扔掉你的狗耳朵恐龙书，其他研究人员警告说：这个新的家谱可能会在未来一段时间内引起争论。