original description
(of Cyclas asiatica E. von Martens, 1864) Martens, E. von. (1864). Fossile Süsswasser-Conchylien aus Sibirien. <em>Zeitschrift der deutschen geologischen Gesellschaft.</em> 16(2): 345-351., available online at https://www.biodiversitylibrary.org/page/43812488
page(s): 349, textfig. 5 [details]
original description
(of Sphaerium transversale Westerlund, 1898) Westerlund, C. A. (1898). Novum specilegium malacologicum. Neue Binnenconchylien aus der paläarktischen Region. <em>Annuaire du Musée Zoologique de l'Académie Impériale des Sciences de St.-Pétersbourg.</em> 3 (2): 155-183. St.-Petersburg [December]., available online at https://www.biodiversitylibrary.org/page/8651422
page(s): 179-180 [details]
original description
(of Cyclas calyculata var. inflata Middendorff, 1851) Middendorff, A. T. von. (1851). Mollusken, pp. 163-464, pls. 8-30. - <i>In</i>: Brandt, F., Erichson, W. F., Fischer, S., Grube, E., Ménétriés, E. & Middendorff, A. T. von: Reise in den äussersten Norden und Osten Sibiriens während der Jahre 1843 und 1844. Band II. Zoologie. Theil 1. Wirbellose Thiere: Annulaten. Echinodermen. Insecten. Krebse. Mollusken. Parasiten. St. Petersburg: Buchdruckerei der Kaiserlichen Akademie der Wissenschaften, 516 pp., 32 pls. , available online at http://biodiversitylibrary.org/page/37047707
page(s): 287 [details]
original description
(of Sphaerium (Cyclas) asiaticum var. caperatum Westerlund, 1897) Westerlund, C. A. (1897). Beiträge zur Molluskenfauna Russlands. (Nach den Sammlungen des Zoologischen Museums der Kaiserl. Akademie der Wissenschaften zu St.-Petersburg). <em>Ezhegodnik Zoologicheskogo Muzeya Imperatorskoi Akademii Nauk (Annuaire du Musée Zoologique de l'Académie Impériale des Sciences de St.-Pétersbourg).</em> 2 (2): 117-143, St.-Petersburg [September]., available online at https://www.biodiversitylibrary.org/page/8651948
page(s): 130 [details]
basis of record
Vinarski, M. V.; Kantor, Yu. I. (2016). Analytical catalogue of fresh and brackish water molluscs of Russia and adjacent countries. A. N. Severtsov Institute of Ecology and Evolution of Russian Academy of Science, Moscow, 544 pp.
page(s): 90 [details] Available for editors [request]
additional source
Vinarski, M.V. (2016). Eduard von Martens's contribution to the knowledge of the Russian continental malacofauna (with examination of type materials of aquatic species accepted by Russian taxonomists). Ruthenica, 26 (1): 1-16. Moskva.
page(s): 12, fig. 7 E [details]
From editor or global species database
Type locality Type locality: Russia, Omsk Region, bank of the Irtysh River near Omsk City (“am Ufer des Irtyschflusses bei Omsk”) [details]