Kalmar "Edentata" tana nufin tsari na dabbobi masu shayarwa waɗanda suka haɗa da armadillos, anteaters, da sloths. Sunan "Edentata" yana nufin "marasa haƙori" a cikin harshen Latin, kodayake ba duka nau'in wannan tsari ba ne gaba daya. Asalin sunan yana nuni ne da rashin hakoran gaba a cikin wadannan dabbobi, amma yanzu an san cewa galibin nau’in halittu a cikin wannan tsari suna da hakora a bayan bakinsu.