Anematina Knight, 1933 † (basis of record)
Anomphalus Meek & Worthen, 1866 † (basis of record)
Anomphalus murankaensis Mazaev, 2020 † (original description)
Apachella Winters, 1956 † (basis of record)
Apachella noinskyi Mazaev, 2020 † (original description)
Arribazona Kues, 1990 † (additional source)
Arribazona tschernyschewi (Yakovlev, 1899) † (basis of record)
Baylea de Koninck, 1883 † (basis of record)
Baylea kuesi Batten, 1995 † (basis of record)
Baylea subpenea (Netschaev, 1894) † (basis of record)
Biarmeaspira verideclinata Mazaev, 2006 † (basis of record)
Bulimorpha Whitefield, 1882 † (basis of record)
Donaldina Knight, 1933 † (basis of record)
Donaldina sakmaraensis Mazaev, 2020 † (original description)
Goniasma golowkinskii (Yakovlev, 1899) † accepted as Goniasma subangulata (Verneuil, 1845) † (source of synonymy)
Goniasma subangulata (Verneuil, 1845) † (basis of record)
Klavlia minuta Mazaev, 2020 † (original description)
Microdoma Meek & Worthen, 1866 † (basis of record)
Microdoma kulogorae (Yakovlev, 1899) † (basis of record)
Murchisonia biarmica Netschaev, 1894 † accepted as Goniasma subangulata (Verneuil, 1845) † (source of synonymy)
Naticopsis McCoy, 1842 † (basis of record)
Naticopsis sokensis Mazaev, 2020 † (original description)
Nemdaella usensis Mazaev, 2020 † (original description)
Stegocoelia samaraensis Mazaev, 2020 † (original description)
Streptacis Meek, 1871 † (basis of record)
Streptacis volgensis Mazaev, 2020 † (original description)
Termihabena Mazaev, 2019 † (basis of record)
Worthenia de Koninck, 1883 † (basis of record)
Worthenia morovi Mazaev, 2020 † (original description)
Worthenia tabulata (Conrad, 1835) † (basis of record)

 Distribution

 for Bulimorpha lavrskyi Mazaev, 2015 †

Volga-Ural Anteclise, Sakmarian and Kazanian stages [details]

 Taxonomy

 for Klavlia Mazaev, 2018 †

According to Mazaev (2020), belongs to the family Holopeidae [details]