符合的藏品

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脊椎動物化石哺乳動物概論

the Triassic Period. Their ancestors can be traced back to a group of mammal-like reptiles that emerged.....more

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. They are an unusual branch of the Mammalian Family that devolved back to homodonts (Odontoceti) or even.....more

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. Elephants trace their ancestry back to the Moeritherium that appeared 55 million years ago.....more

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was ground to the diamond shape. The last teeth in the back of upper and lower jaws had the thickness.....more

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back to the dawn of Earth's formation, when there were no oxygen on the surface and the atmospher.....more

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back to at least a million years, these animals are believed to be an unrecorded new species.....more

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