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1861年在德国发现了“始祖鸟”的化石。许多动物学家们通过对“始祖鸟”形态特征的研究发现,这种动物既保持着爬行动物
In 1861 in Germany found “Archeopteryx” fossils. Many zoologists through the “Archeopteryx” morphological characteristics of the study found that both keep the reptiles