↑ W. M. Furnish; B. F. Glenister; J. Kullmann & Z. Zhou (2009). Treatise on Invertebrate Paleontology, Part L, Revised: Mollusca 4, Volume 2: Carboniferous and Permian Ammonoidea (Goniatitida and Prolecanitida). pp.1–258. ISBN9781891276613.
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