Entity:

Authorship

Original name

Say, 1818. J. Acad. nat. Sci. Philad., 1 (10), 276.

Types

Type of	:	*Polygyridae* (Family) Pilsbry, 1895	Ref: P. Bouchet & J.-P. Rocroi, 2005: 137. [implicit]
Type of	:	*Polygyrina* (Subtribe) Pilsbry, 1895	Ref: P. Bouchet & J.-P. Rocroi, 2005: 137. [implicit]
Type of	:	*Polygyrinae* (Subfamily) Pilsbry, 1895	Ref: P. Bouchet & J.-P. Rocroi, 2005: 137.
Type of	:	*Polygyrini* (Tribe) Pilsbry, 1895	Ref: P. Bouchet & J.-P. Rocroi, 2005: 137. [implicit]
Type, by subsequent designation	:	*Polygyra septemvolva* Say, 1818	Ref: Herrmannsen, 1847: 317.

Including

Helicodonta (Genus) Férussac, 1821

Ref: V.G. Millard, 1997: 304 ("Férussac, 1819").