Hominid Humeral Fragment from Early Pleistocene of Northwestern Kenya

@article{Patterson1967HominidHF,
  title={Hominid Humeral Fragment from Early Pleistocene of Northwestern Kenya},
  author={Bryan Patterson and William W. Howells},
  journal={Science},
  year={1967},
  volume={156},
  pages={64 - 66}
}
The distal end of a hominoid humerus was recovered from early Pleistocene sediments in the Kanapoi drainage near the southern end of Lake Rudolf. Lava capping the sediments yielded a potassium/argon date of 2.5 million years. The fragment can be distinguished on inspection from gorilla and orangutan; discriminate analysis of humeri of Homo and Pan assigns it as hominid. From other evidence we consider it more likely to represent Australopithecus s.s. than Paranthropus. 
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Field work supported by NSF grants GP-1188 and GA-425
    Leakey and the staff of the National Museum Centre for Prehistory and Palaeontology
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      The word "approximately" is used because a degree of subjective judgment Is inevitably involved
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