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  1. By: Stephenson, N G
    Type: Article
    In: Palaeontology
    Volume: 6
    Date: 1963
    Page Range: 615--624
    Publication Info: London, Palaeontological Association, 1957-
  2. By: Stephenson, N G
    Type: Article
    In: Records of the Auckland Institute and Museum
    Volume: 3
    Date: 1948
    Page Range: 339--341
    Publication Info: Auckland, N.Z Auckland Institute and Museum 1930-97