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  1. By: Gupta, Vishwa Jit - Webster, G. D. (Gary D.),
    Type: Article
    In: Palaeontology
    Volume: 14
    Date: 1971
    Page Range: 262--265
    Publication Info: London, Palaeontological Association, 1957-
  2. By: Webby, Barry D - Gupta, Vishwa Jit
    Type: Article
    In: Proceedings of the Linnean Society of New South Wales
    Volume: 92
    Date: 1967
    Page Range: 195--203
    Publication Info: Sydney Linnean Society of New South Wales