牠们的后代分为3支,其中一支为肉齿类动物(Creodont),是最早期的食肉哺乳类动物,大约为53至60万年前,身躯长但四肢短,有尖牙利齿但脑子细小,分布在亚洲、非洲、欧洲及北美洲生活...
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N any of a group of extinct Tertiary mammals some of which are thought to have been the ancestors of modern carnivores: order Carnivora 原始肉食哺乳动物类
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