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  1. By: Stanley, D. Christopher A. - Pickerill, R. K. - Royal Ontario Museum.
    Publication info: Toronto, Royal Ontario Museum, c1998
    Holding Institution: Royal Ontario Museum
  1. By: Briggs, Derek E. G. (Derek Ernest Gilmor), - Plint, A. Guy. - Pickerill, R. K.
    Type: Article
    In: Palaeontology
    Volume: 27
    Date: 1984
    Page Range: 843--855
    Publication Info: London, Palaeontological Association, 1957-
  2. By: Pickerill, R. K. - Brenchley, P. J. (Patrick J.),
    Type: Article
    In: Palaeontology
    Volume: 22
    Date: 1979
    Page Range: 229--264
    Publication Info: London, Palaeontological Association, 1957-
  3. By: Keighley, D G - Pickerill, R. K.
    Type: Article
    In: Palaeontology
    Volume: 37
    Date: 1994
    Page Range: 305--337
    Publication Info: London, Palaeontological Association, 1957-