Measuring Late Quaternary Ursid Diminution in the Midwest

  title={Measuring Late Quaternary Ursid Diminution in the Midwest},
  author={Steve Wolverton and R. L. Lyman},
  journal={Quaternary Research},
  • Steve Wolverton, R. L. Lyman
  • Published 1998
  • Geology
  • Quaternary Research
  • Abstract Paleobiologists generally agree that within the past 10,000 yr North American black bears ( Ursus americanus ) have decreased in body and tooth size. Some researchers infer that diminution was gradual and continuous; thus, one might infer that a specimen is old if it is larger than an average-size modern bear. Ursid remains recovered in the 1950s from Lawson Cave, Missouri, that are larger than some modern bears have been reported to date to the late Pleistocene, but association with… CONTINUE READING
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