Family Polygyridae Pilsbry 1895 (slug)

Gastropoda - Stylommatophora - Polygyridae

Parent taxon: Helicoidea according to P. Bouchet et al. 2017

See also Kittle and Portell 2010 and Roth and Emberton 1994

Sister taxa: Camaenidae, Elonidae, Geomitridae, Helicidae, Helicodontidae, Hygromiidae, Pleurodontidae, Sphincterochilidae, Trissexodontidae

Subtaxa: Daedalochila Euchemotrema Patera Polygyra Triodopsis

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Ecology: epifaunal

Distribution:

• Quaternary of United States (22: Florida, Texas, Virginia collections)

• Oligocene to Miocene of United States (3: Florida, Montana)

• Eocene of United States (1: Wyoming)

• Cretaceous of Argentina (1), United States (1: Texas)

Total: 28 collections including 46 occurrences

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