勞亞獸總目

勞亞獸總目（學名：Laurasiatheria）是通过分析对比DNA序列及反转录转座子标记（英语：Retrotransposon marker）而成立的一个哺乳动物演化支，隶属有胎盤類下的北方真兽高目，现存种类包括鼩鼱、刺猬、蝙蝠、穿山甲、食肉目、奇蹄动物、偶蹄动物和鯨類等，为哺乳纲中最大的總目级单位。“劳亚兽”一词是指此类哺乳动物起源于9100—7600万年前北半球的劳亚大陆，并在劳亚大陆演化扩散。 根据分子遺傳學的研究结果，劳亚兽总目和其他真獸類的亲缘关系可能如下: 根据大部分学者认可的猛兽有蹄类学说，劳亚兽总目内部的演化关系可能如下（基於线粒体 DNA、核 DNA 與蛋白质特徵構建）： 劳亚兽总目 Laurasiatheria（符号 † 表示已灭绝，? 表示存在疑问） 真盲缺目 Eulipotyphla 有阴囊类（脉兽类）Scrotifera 翼手目 Chiroptera 猛兽有蹄类 Ferungulata ?†踝節目 Condylarthra（可能为多系群） 真有蹄类 Euungulata 中軸類 Mesaxonia †伪齿兽科 Phenacodontidae †炭丘齿兽科 Anthracobunidae †南美有蹄类 Meridiungulata ?†焦獸目 Pyrotheria ?†闪兽目 Astrapotheria †南方有蹄目 Notoungulata †滑距骨目 Litopterna †异蹄目 Xenungulata 奇蹄目 Perissodactyla †恐角目 Dinocerata 副軸類 Paraxonia ?†熊犬科 Arctocyonidae †中爪兽目 Mesonychia 偶蹄目 Artiodactyla 猛兽类 Ferae †肉齿目 Creodonta（可能为多系群） †鬣齿兽目 Hyaenodonta †牛鬣兽目 Oxyaenodonta 鳞甲形类 Pholidotamorpha 鳞甲目 Pholidota †古乏齿兽目 Palaeanodonta 食肉形类 Carnivoramorpha †古灵猫科 Viverravidae 食肉型類 Carnivoraformes †细齿兽科 Miacidae 食肉目 Carnivora dos Reis, Mario; Inoue, Jun; Hasegawa, Masami; Asher, Robert J.; Donoghue, Philip C. 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