它的头骨与鲸类相似，但它的下颚骨没有现代鲸鱼用来接收水下声音的、充满脂肪或油脂的扩充空间。

The skull is cetacean-like but its jawbones lack the enlarged space that is filled with fat or oil and used for receiving underwater sound in modern whales.

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许多已发现的头骨与功能之间的两个中间。

Many skulls have been found with features intermediate between the two.

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这个头骨与翅膀是一个伟大的例子，我们能做些什么。

This skull with wings is a great example of what we can do.

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