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Australopithecus afarensis: AL 266-1

  • Geologic Age:

    3.2 Ma - 3 Ma

  • Discovery Location:

    Hadar, Ethiopia

  • Specimen Age:


  • Sex:


  • Original Publication:

    Johanson and Taieb 1976

    AL 266-1 consists of a single mandible missing some alveolar bone in the anterior section as well as vertical rami. All premolars are present, and most molars with the exception of LM2 and LM3. In a lower premolar morphocline of all Au. afarensis, AL 266-1 would be somewhere in the middle, with relatively more square P2, and a P1 that is relatively longer mesiodistally on its lingual side than its buccal side1.

    1. Schwartz JH and Tattersall I. 2005. The Human Fossil Record: Craniodental Morphology of Early Hominids (Genera Australopithecus, Paranthropus, Orrorin), and Overview. Volume Four. Hoboken: Wiley-Liss.

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