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哺乳動物牙齒的基本構造

物，而前臼齒與臼齒則是用來研磨並切割食物。Mammals Basic Structure哺乳動物化石牙齒基本構造The mammalian tooth is made up of enamel.....more

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on the molar crows, the texture of the incisor enamel as well as the shape of the skeletal joints.....more

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primigenius had bulged forehead and short lower jaw. Mammuthus primigenius had dense and enamel plates.....more

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forming a roof-like ridge. The enamel was rough and lined with bigger thickness. The molar plate.....more

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elephants also have high crown molars with the chewing side of long oval shape, dense enamel.....more

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