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  1. By: Loydell, D K - Bull, Elizabeth E. - Štorch, P
    Type: Article
    In: The Bulletin of zoological nomenclature
    Volume: 49
    Date: 1992
    Page Range: 46--48
    Publication Info: London International Trust for Zoological Nomenclature
  2. By: Bull, Elizabeth E.
    Type: Article
    In: Palaeontology
    Volume: 30
    Date: 1987
    Page Range: 117--140
    Publication Info: London, Palaeontological Association, 1957-