Tchangmargarya is a genus of large operculate freshwater snails, aquatic gastropod molluscs in the family Viviparidae.
Taxonomy Tchangmargarya originally was a subgenus of Margarya, and is elevated to a full genus based on molecular phylogeny and comparative morphology study.
Distribution This genus appear to be endemic to Yangzong Lake and lakes in Stone Forest in Yunnan Province in the China.
Species There are 3 extant species of Tchangmargarya:
Tchangmargarya yangtsunghaiensis (Tchang & Tsi, 1949) -type species Di L., Jiang Y., Min W., Yeuing L., Aldridge D. & McIvor A. (2008). Margarya yangtsunghaiensis. In: IUCN 2010. IUCN Red List of Threatened Species. Version 2010.3. <www.iucnredlist.org>. Downloaded on 14 September 2010.(possibly extinct) Tchangmargarya multilabiata Zhang & Chen, 2015 Tchangmargarya ziyi Zhang, 2017 (possibly extinct)
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