The second scenario pointed out that these two groups and the therizinosaurs belong to a specific subgroup of theropods called Coelurosauria, along with dedicated carnivores like T. rex.

第二种情况指出，这两个种群和镰刀龙属于兽脚类动物的一个特定亚群，称为虚骨龙，以及像霸王龙这样的专职食肉动物。