This mentioned taxonomy is an attempt to make an conclusive assignment from the different classifications of various scientists. Because the taxonomy may change due to the latest investigative methods and other findings, our map is a guide only.
P. J. Wagner, 2020 - Paleozoic Gastropod, Rostroconch, Helcionelloid and Tergomyan Database (2006 - 2020) - (), - (compendium, English)
R. B. Blodgett, 1992 - Early Middle Devonian (Eifelian) Gastropods of Central Nevada - Palaeontographica Abteilung A (222), 85-139 (serial monograph, English)
C. B. Tassell, 1982 - Gastropods from the Early Devonian "Receptaculites" Limestone, Taemas, New South Wales - Records of the Queen Victoria Museum (77), 1-59 (journal article, )
D. M. Rohr, 1980 - Ordovician - Devonian Gastropoda from the Klamath Mountains, California - Palaeontographica Abteilung A (171), 141-199 (serial monograph, English)
A. E. Wilson, 1951 - Gastropoda and Conularida of the Ottawa Formation of the Ottawa - St. Lawrence Lowland - Geological Survey of Canada Bulletin (17), 1-149 (serial monograph, )
A. E. Wilson, 1938 - Gastropods from the Akpotok Island, Hudson Strait - Transactions of the Royal Society of Canada, sec. 4 (4), 25-37 (journal article, English)
R. Endo, 1935 - Additional fossils from the Canadian and Ordovician rocks of the southern part of Manchoukuo - Science Reports of the Tohoku Imperial University. 2nd Series (16), 191-223 (journal article, English)
E. O. Ulrich, 1897 - The Lower Silurian Gastropoda of Minnesota - The Paleontology of Minnesota (39), 813-1081 (serial monograph, English)
E. Koken, 1897 - Die Gastropoden des baltischen Untersilurs - Bulletin de l'Académie Impériale des Sciences de St. Pétersburg (7), 97-214 (journal article, German)
F.W. Sardeson, 1892 - Fossils in the St. Peter sandstone - Minnesota Academy of Natural Science Bulletin (3), 319-326 (journal article, English)
R. P. Whitfield, 1886 - Notice of geological investigations along the eastern shore of Lake Champlain, conducted by Prof. H.J. Seely and Pres. Ezra Brainerd, of Middlebury College, with descriptions of the new fossils discovered - Bulletin of the American Museum of Natural History (1), 24-35 (journal article, English)
J. Hall, 1872 - Descriptions of new species of fossils from the Hudson River Group, in the vicinity of Cincinnati, Ohio - Annual report on the New York State Museum of Natural History by the Regents of the Unviersity of the State of New York (24), 225-232 (journal article, English)
F. B. Meek, 1870 - Descriptions of new species and genera of fossils from the Palaeozoic rocks of the western states - Proceedings of the Academy of Natural Sciences, Philadelphia (22), 22-56 (journal article, English)
E. Billings, 1865 - Palaeozoic fossils, volume 1 - Geological Survey of Canada (), 1-426 (serial monograph, )
J. Hall, 1847 - Containing descriptions of the organic remains of the lower division of the New York system (equivalent of the Lower Silurian rocks of Europe) - Paleontology of New York (1), 1-338 (serial monograph, )