Origin: Greek prefix auto-
Autochthonous has 3 different meanings across 1 category:
of rocks, deposits, etc.; found where they and their constituents were formed
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"
Native to the place where found; indigenous.