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Taxonomy: For all marine species, Project Gastropods uses the taxonomy in the online database WoRMS. When starting a new article, do not use sources of taxonomic information that predate the 2017 revision for all gastropod groups ("Revised Classification, Nomenclator and Typification of Gastropod and Monoplacophoran Families" by Philippe Bouchet & Jean-Pierre Rocroi, Bernhard Hausdorf, Andrzej Kaim, Yasunori Kano, Alexander Nützel, Pavel Parkhaev, Michael Schrödl and Ellen E. Strong in Malacologia, 2017, 61(1–2): 1–526.) (can be dowloaded at Researchgate.net), substituting the previous classification of 2005 Taxonomy of the Gastropoda (Bouchet & Rocroi, 2005). If you need help with any aspect of an article, please leave a note at the Project talk page.
Here is the essential part of the message: "According to Falkner (from Gloer, 2002) Anisus septemgyratus Rossmässler, 1835 is a junior synonym of Anisus leucostoma Miller, 1813, because the animals from the type locality are identical with Anisus leucostoma. However, most authors misidentified this species and applied the name to animals which are in reality Anisus calculiformis. So Anisus septemgyratus auct. (not Rossmässler) is synonymous to Anisus calculiformis. Perhaps I should add a footnote to Anisus leucostoma to explain this complicated matter. Greetings -- Engeser 15:02, 11. Mai 2009 (CEST)"
