2.5 Ma
1967
Camille Arambourg and Yves Coppens
Omo River, Omo Valley, Ethiopia
OMO 18-1967-18 is a partial mandible, and was attributed to a separate species from other robust australopiths at the time of its discovery because of it's unusual V-shaped mandible. The mandible is missing the rami, and does not include any well-preserved teeth1.
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