“marsupialia (fossil)”的概念、定义、翻译、参考文献-科学参考

marsupialia (fossil)

Encyclopedia

理学哺乳纲（化石）释
marsupialia (fossil)有袋类（化石）
在旧的分类系统中被归入一个单一的分类单元，即有袋目（Marsupialia），曾为哺乳动物兽亚纲（Theria）后兽下纲（Infraclass Metatheria）中唯一的目。现代的分类系统把旧系统中有袋目原有的内涵扩充成为有袋部（Cohort Marsupialia），之下包括美洲负鼠巨目（Megnorder Ameridelphia）和澳洲负鼠巨目（Megnorder Australidelphia）。一些学者把美洲负鼠巨目负鼠目（Didelphimorphia）中的肉食负鼠科（Peradectidae）归入一个与美洲负鼠巨目和澳洲负鼠巨目等同级别的阿尔法负鼠巨目（Megnorder Alphadelphia）中。

单词	marsupialia (fossil)
释义	marsupialia (fossil) Encyclopedia 理学哺乳纲（化石）释 marsupialia (fossil)有袋类（化石）在旧的分类系统中被归入一个单一的分类单元，即有袋目（Marsupialia），曾为哺乳动物兽亚纲（Theria）后兽下纲（Infraclass Metatheria）中唯一的目。现代的分类系统把旧系统中有袋目原有的内涵扩充成为有袋部（Cohort Marsupialia），之下包括美洲负鼠巨目（Megnorder Ameridelphia）和澳洲负鼠巨目（Megnorder Australidelphia）。一些学者把美洲负鼠巨目负鼠目（Didelphimorphia）中的肉食负鼠科（Peradectidae）归入一个与美洲负鼠巨目和澳洲负鼠巨目等同级别的阿尔法负鼠巨目（Megnorder Alphadelphia）中。
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