Two new species of two-legged carnivores were unveiled in February: one that hunted like a shark and another that may have eaten like a hyena, researchers said.

• 两种新的二足食肉动物物种在2月份被公布：其中一种像鲨鱼一样捕食而而另一种可能像鬣狗一样吃东西，研究人员称。