MolluscaBase taxon details
original description
Pfeiffer, L. (1849-1850). Neue Molluskengattungen. <em>Zeitschrift für Malakozoologie. Cassel (Theodor Fischer).</em> 6(7): 97–105 [December 1849]; 6(8) (“1849”): 113–116 [January 1850]., available online at https://www.biodiversitylibrary.org/page/16300195 page(s): 103 [details]
original description
(of Hypostoma Albers, 1850) Albers, J. C. (1850). Die Heliceen nach natürlicher Verwandtschaft systematisch geordnet. <em>Berlin: Enslin.</em> 262 pp., available online at https://www.biodiversitylibrary.org/page/11965983 page(s): 130 [details]
original description
(of Hypotrema Albers, 1860) Albers, J. C. & Martens, E. von. (1860). <i>Die Heliceen nach natürlicher Verwandtschaft systematisch geordnet von Joh. Christ. Albers</i>. Ed. 2. Pp. i-xviii, 1-359. Leipzig: Engelman [original manuscript of Albers edited and published by Martens]., available online at https://www.biodiversitylibrary.org/page/11648540 page(s): 304 [details]
basis of record
Schileyko, A. A. (1998). Treatise on Recent terrestrial pulmonate molluscs. Part 2. Gastrocoptidae, Hypselostomatidae, Vertiginidae, Truncatellinidae, Pachnodidae, Enidae, Sagdidae. <em>Ruthenica.</em> Supplement 2: 129-261. Moskva [November]. page(s): 142 [details] 
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