Kalmar "Genus Homo" tana nufin rabe-raben haraji na dangin halittu na Hominidae, wanda ya haɗa da mutanen zamani da kakanni na ɗan adam. Halin halittar Homo yana da wasu halaye na zahiri da na ɗabi'a, kamar girman girman kwakwalwa, madaidaiciyar matsayi da motsi biyu, da amfani da kayan aiki. Halittar Homo ta fara bayyana kimanin shekaru miliyan 2.8 da suka wuce, kuma nau'in Homo da dama sun samo asali kuma sun bace, wanda ya kai ga bullowar mutane na zamani (Homo sapiens) kimanin shekaru 300,000 da suka wuce.