灵长类(primate)
灵长目有胎盘哺乳类动物，约9,750万年前以居於森林的形式出现。灵长类因具有下列一至数项的特徵而与其他哺乳动物有所区别︰未特化的构造、特化的行为、鼻口部短、嗅觉退化、手足善於抓握，具5指或趾、扁平的指（趾）甲、指、趾端无爪、视觉敏锐，具一定程度的双眼视觉、双眼向前直视、脑的体积较大和长时间的出生前或出生後的发育。许多种类哺育1幼仔并居住於由雄性领导的集群中。猿猴亚目包含8科︰狐猴（狐猴科、大狐猴科、侏儒狐猴科、鼬狐猴科）、指猴（指猴科）、婴猴（Galagonidae）和懒猴（懒猴科）、眼镜猴（眼镜猴科）。类人猿亚目（被称为狭鼻类的一群）包含9科︰新大陆猴（狨科、卷尾猴科、Aotidae科、Atelidae科、Pitheciidae科）、旧大陆猴（猴科）、小型类人猿（长臂猿科）、大型类人猿（猩猩科）和人（人科）。巨猿有时也与人被一同列入人科中。
English version：
primate
Placental mammal (order Primates) that originated as a forest-dweller perhaps 97.5 million years ago. Primates are distinguished from other mammals by one or more of the following: unspecialized structure, specialized behavior, short muzzle, poor smell, prehensile five-digit hands and feet, flat nails, no claws, depth perception with acute vision that is binocular to some degree, forward-facing eyes, large brain, and prolonged pre- and postnatal development. Most species bear a single young and live in troops headed by a male. The prosimians include eight families: lemurs (Lemuridae, Indriidae, Cheirogaleidae, Megaladapidae), the aye-aye (Daubentoniidae), galagos (Galagonidae), and lorises (Loridae), tarsiers (Tarsiidae). The anthropoids (a a group called the Catarrhini) include nine families: New World monkeys (families Callitrichidae, Cebidae, Aotidae, Atelidae, and Pitheciidae), Old World monkeys (Cercopithecidae), the lesser apes (Hylobatidae), the great apes (Pongidae), and humans (Hominidae). The great apes are sometimes classified with humans in Hominidae.