Synonyms of autochthonous

1. autochthonous (vs. allochthonous): usage: of rocks, deposits, etc.; found where they and their constituents were formed
2. autochthonal, autochthonic, autochthonous, endemic, indigenous, native (vs. foreign): usage: originating where it is found; "the autochthonal fauna of Australia includes the kangaroo"; "autochthonous rocks and people and folktales"; "endemic folkways"; "the Ainu are indigenous to the northernmost islands of Japan"