Comment on

• Environment and behavior of 2.5-million-year-old Bouri hominids.

  de Heinzelin J, Clark JD, White T, Hart W, Renne P, WoldeGabriel G, Beyene Y, Vrba E. de Heinzelin J, et al. Science. 1999 Apr 23;284(5414):625-9. doi: 10.1126/science.284.5414.625. Science. 1999. PMID: 10213682
• Australopithecus garhi: a new species of early hominid from Ethiopia.

  Asfaw B, White T, Lovejoy O, Latimer B, Simpson S, Suwa G. Asfaw B, et al. Science. 1999 Apr 23;284(5414):629-35. doi: 10.1126/science.284.5414.629. Science. 1999. PMID: 10213683