单词 | Metatheria |
释义 | Metatheria [´med·ǝ`thir·ē·ǝ] VERTEBRATE ZOOLOGY An infraclass of therian mammals including a single order, the Marsupialia; distinguished by a small braincase, a total of 50 teeth, the inflected angular process of the mandible, and a pair of marsupial bones articulating with the pelvis. |
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