哺乳形態類(學名:Mammaliamorpha)是獸孔目犬齒獸亞目的一個演化支,包含了哺乳動物冠群與三瘤齒獸科最近共同祖先的所有後代[1],哺乳形類[2](Mammaliaformes)與巴西齒獸科(Brasilodontidae)都屬於本演化支[1]。最早在三疊紀就已經出現[1][3]。
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