sphenopterotic ridge On the neurocranium, a horizontal ridge along the dorsolateral edge of each otic capsule that either ends at the occiput or terminates in an expanded pterotic process.

• 蝶翼耳骨脊在脑颅上，一个水平的脊沿著每个耳鞘的背侧缘，结束于后头部或终止在一个被扩大的翼耳骨突起。