Australopithecus deyiremeda

Australopithecus deyiremeda is an extinct australopithecine from Woranso-Mille in the Afar Region of Ethiopia, dated to about 3.5 to 3.3 million years ago in the Pliocene. It is known from only three partial jawbones, so it is uncertain whether it is a distinct species or belongs with the better-known Australopithecus afarensis. It is distinguished by forward-facing cheek bones and small cheek teeth. It lived in a mosaic of open grassland and lake or riverside forest alongside Australopithecus afarensis, and the two may have avoided competition by relying on different fallback foods in lean times. A partial foot with a dextrous big toe may or may not belong to it.