我盯著厚鼻龙的口鼻部，牠是只奇特的独角恐龙，是三角龙属的亲戚，不过数量十分稀少。

I was looking at the snout of a Pachyrhinosaurus, a particularly odd horned dinosaur, a rare relative of Triceratops.

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剑角龙是属于肿头龙类食叶属之一，这种物种生存于7千万年前的地球。

Stegoceras was a member of the leaf-eating genus Pachycephalosauria that roamed the Earth around 70 million years ago.

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