On top of its head were two bony  structures, called ossicones, that it has in common with its modern  kin.

它的头顶有两个骨骼结构，称为骨骨， 与其现代亲属有共同之处。

From curly horns to pronghorns, branching antlers to knobby ossicones, all these mammals have elaborate bones growing out of their heads.

从卷角角到叉角羚，从分叉的鹿角到多节的骨锥，所有这些哺乳动物的头部都长出了精致的骨头。