Helisoma Swainson 1940 (snail)
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Gastropoda - Heterostropha - Planorbidae
Parent taxon: Coretini according to P. Bouchet et al. 2005
See also DuBar 1958, Schultz and Cheatum 1970 and Shoshani et al. 1989
Sister taxon: Planorbarius
Subtaxa: Helisoma dongdawusuensis Helisoma llanerensis Helisoma trivolvis
Ecology: epifaunal
Distribution:
• Quaternary of Canada (1: Alberta collection), Mexico (1), United States (19: California, Florida, Kansas, Michigan, Ohio, Texas)
• Pliocene to Pleistocene of United States (1: Florida)
• Pliocene of Venezuela (1)
• Miocene of Peru (2)
• Oligocene of Peru (2)
• Paleocene of China (2)
Total: 29 collections including 35 occurrences
Specimen images are retrieved through the ePANDDA API.
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