见微知著 ——用牙齿微痕分析覆盾甲龙类如何咬碎食物

Fossils(2021)

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Abstract
众所周知,牙齿的形态是研究古生物食性的重要证据.如匕首状的兽脚类牙齿显示它们为肉食性恐龙,而且截面呈D字形的暴龙类牙齿说明它们有很强的穿透力,甚至可以咬穿猎物的骨骼.鸟臀类中呈叶状的牙齿则说明它们是植食性恐龙.成排排列的禽龙类和角龙类的牙齿说明它们有一定的咀嚼能力,咬合相对复杂.
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