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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Wilson, Mark A.
    Type: Article
    In: Palaeontology
    Volume: 29
    Date: 1986
    Page Range: 691--703
    Publication Info: London, Palaeontological Association, 1957-
  2. By: Palmer, T J - Wilson, Mark A.
    Type: Article
    In: Palaeontology
    Volume: 31
    Date: 1988
    Page Range: 939--949
    Publication Info: London, Palaeontological Association, 1957-