Whitfield R.P. (1892). Gastropoda and Cephalopoda of the Raritan Clays and Greensand Marls of New Jersey. <em>United States Geological Survey Monograph.</em> 18: 1-402, 50 pls., available online athttps://www.biodiversitylibrary.org/page/42454439 page(s): 176 [details]
original descriptionWhitfield R.P. (1892). Gastropoda and Cephalopoda of the Raritan Clays and Greensand Marls of New Jersey. <em>United States Geological Survey Monograph.</em> 18: 1-402, 50 pls., available online athttps://www.biodiversitylibrary.org/page/42454439 page(s): 176 [details]
additional sourceCossmann, M. (1912). Essais de paléoconchologie comparée. Neuvième livraison. Paris, The author and J. Lamarre & Cie. 215 pp., 10 pls. , available online athttps://www.biodiversitylibrary.org/item/112976 page(s): 68 [details]
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