Agrenocythere pliocenica minor (Seguenza, 1880) † (original description)
Agrenocythere pliocenica pliocenica Seguenza, 1880 † (original description)
Bairdia complanata sinuata Seguenza, 1880 † accepted as Bythocypris complanata sinuata (Seguenza, 1880) † (original description)
Bairdia obtusata producta Seguenza, 1880 † accepted as Bairdia producta (Seguenza, 1880) † (original description)
Bairdia producta (Seguenza, 1880) † (original description)
Bairdia productai (Seguenza, 1880) Ruggieri, 1991 † accepted as Bairdia producta (Seguenza, 1880) † (original description)
Bairdia recta Seguenza, 1880 † (original description)
Bairdia reniformis Seguenza, 1880 † (original description)
Bosquetina marginatostriata (Seguenza, 1880) Bold, 1966 † (original description)
Buntonia (Quasibuntonia) radiatopora radiatopora (Seguenza, 1880) Reyment, 1963 accepted as Quasibuntonia radiatopora radiatopora (Seguenza, 1880) † (original description)
Buntonia (Quasibuntonia) radiatopora sculpta (Seguenza, 1880) Colalongo, 1966 † accepted as Quasibuntonia sculpta (Seguenza, 1880) † (original description)
Buntonia radiatopora radiatopora (Seguenza, 1880) † accepted as Quasibuntonia radiatopora radiatopora (Seguenza, 1880) † (original description)
Buntonia radiatopora sculpta (Seguenza, 1880) Ruggieri, 1954 † accepted as Quasibuntonia sculpta (Seguenza, 1880) † (original description)
Bythocypris complanata sinuata (Seguenza, 1880) † (original description)
Bythocypris lucida (Seguenza, 1880) Dieci & Russo, 1965 † (original description)
Bythocypris producta (Seguenza, 1880) Ruggieri, 1991 † (original description)
Costa edwardsii (Roemer, 1838) † (additional source)
Costa edwardsii radiatoplicata (Seguenza, 1880) † (original description)
Costa edwardsii subinermis (Seguenza, 1880) † (original description)
Cythere avirostris Seguenza, 1880 † (original description)
Cythere bradyi Seguenza, 1880 † (original description)
Cythere calcarata Seguenza, 1880 † accepted as Pseudocythere calcarata (Seguenza, 1880) † (original description)
Cythere cordiformis subtrigona (Seguenza, 1880) Namias, 1901 † (original description)
Cythere edwardsii radiatoplicata Seguenza, 1880 † accepted as Costa edwardsii radiatoplicata (Seguenza, 1880) † (original description)
Cythere edwardsii subinermis Seguenza, 1880 † accepted as Costa edwardsii subinermis (Seguenza, 1880) † (original description)
Cythere flabellata Seguenza, 1880 † accepted as Verrucocythereis flabellata (Seguenza, 1880) Ruggieri, 1963 † (original description)
Cythere foliacea Seguenza, 1880 † (original description)
Cythere foveolata Seguenza, 1880 † (original description)
Cythere foveolata foveolata Seguenza, 1880 † (original description)
Cythere histrix (Reuss, 1850) † (new combination reference)
Cythere histrix elongata Seguenza, 1880 † (original description)
Cythere histrix histrix (Reuss, 1850) † (new combination reference)
Cythere histrix scaberrima Seguenza, 1880 † (original description)
Cythere humilis Seguenza, 1880 † (original description)
Cythere hystrix (Reuss, 1850) † (new combination reference)
Cythere hystrix elongata Seguenza, 1880 † (original description)
Cythere hystrix hxstrix (Reuss, 1850) † (new combination reference)
Cythere hystrix scaberrima Seguenza, 1880 † (original description)
Cythere interposita Seguenza, 1880 † (original description)
Cythere marginatostriata (Seguenza, 1880) Bold, 1966 † (original description)
Cythere marginatostriatai (Seguenza, 1880) Bold, 1966 † accepted as Cythere marginatostriata (Seguenza, 1880) Bold, 1966 † (original description)
Cythere microtuberculata Seguenza, 1880 † (original description)
Cythere oblonga eximia Seguenza, 1880 † (original description)
Cythere parva Seguenza, 1880 † accepted as Ionicythere parva (Seguenza, 1880) Ruggieri, 1991 † (original description)
Cythere parva parva Seguenza, 1880 † accepted as Ionicythere parva parva (Seguenza, 1880) Ruggieri, 1991 † (original description)
Cythere pliocenica Seguenza, 1880 † accepted as Agrenocythere pliocenica (Seguenza, 1880) † (original description)
Cythere pliocenica minor Seguenza, 1880 † accepted as Agrenocythere pliocenica minor (Seguenza, 1880) † (original description)
Cythere pliocenica pliocenica Seguenza, 1880 † accepted as Agrenocythere pliocenica pliocenica Seguenza, 1880 † (original description)
Cythere quadridentata tenuis Seguenza, 1880 † (original description)
Cythere radiatopora Seguenza, 1880 † accepted as Quasibuntonia radiatopora (Seguenza, 1880) † (original description)
Cythere radiatopora inornata Seguenza, 1880 † accepted as Quasibuntonia radiatopora inornata (Seguenza, 1880) † (original description)
Cythere radiatopora radiatopora Seguenza, 1880 † accepted as Quasibuntonia radiatopora radiatopora (Seguenza, 1880) † (original description)
Cythere radiatopora sculpta Seguenza, 1880 † accepted as Quasibuntonia sculpta (Seguenza, 1880) † (original description)
Cythere rarepunctata Seguenza, 1880 † accepted as Leptocythere rarepunctata (Seguenza, 1880) Ascoli, 1965 † (original description)
Cythere rostrata Seguenza, 1880 † (original description)
Cythere semilunata Seguenza, 1880 † accepted as Aurila semilunata (Seguenza, 1880) Nascimento, 1990 † (original description)
Cythere seminulum Seguenza, 1880 † accepted as Nonurocythereis seminulum (Seguenza, 1880) Ruggieri & Russo, 1980 † (original description)
Cythere sororcula Seguenza, 1880 † accepted as Urocythereis sororcula (Seguenza, 1880) Uliczny, 1969 † (original description)
Cythere sororcula minor Seguenza, 1880 † accepted as Urocythereis sororcula minor (Seguenza, 1880) † (original description)
Cythere sororcula obliterata Seguenza, 1880 † accepted as Urocythereis sororcula obliterata (Seguenza, 1880) † (original description)
Cythere sororcula sororcula Seguenza, 1880 † accepted as Urocythereis sororcula sororcula (Seguenza, 1880) Uliczny, 1969 † (original description)
Cythere subaequalis Seguenza, 1880 † (original description)
Cythere subtrigona Seguenza, 1880 † (original description)
Cythere subtrigona marginatostriata Seguenza, 1880 † (original description)
Cythere subtrigona subtrigona Seguenza, 1880 † (original description)
Cythere tetraptera Seguenza, 1880 † accepted as Ruggieria tetraptera (Seguenza, 1880) Ruggieri, 1959 † (original description)
Cythere tetraptera angustata Seguenza, 1880 † accepted as Ruggieria tetraptera angustata (Seguenza, 1880) Ruggieri, 1962 † (original description)
Cythere tetraptera dentata Seguenza, 1880 † accepted as  † (original description)
Cythere tetraptera tetraptera Seguenza, 1880 † accepted as Ruggieria tetraptera tetraptera (Seguenza, 1880) Ruggieri, 1959 † (original description)
Cythere trigonata Seguenza, 1880 † (original description)
Cytherella bipartita Seguenza, 1880 † (original description)
Cytherella bradyi Seguenza, 1880 † (original description)
Cytherella calabra Seguenza, 1880 † (original description)
Cytherella consanguinea Seguenza, 1880 † (original description)
Cytherella hispida Seguenza, 1880 † (original description)
Cytherella lucida Seguenza, 1880 † (original description)
Cytherella lucida lucida Seguenza, 1880 † (original description)
Cytherella lucida oblonga Seguenza, 1880 † (original description)
Cytheridea exilis Seguenza, 1880 † (original description)
Cytheridea lucida Seguenza, 1880 † (original description)
Cytheridea punctatocompressa Seguenza, 1880 † (original description)
Cytheridea vitrea Seguenza, 1880 † (original description)
Cytheropteron bovettense Seguenza, 1880 † accepted as Paracytheridea bovettensis (Seguenza, 1880) † (original description)
Cytheropteron calcaratum Seguenza, 1880 † accepted as Paracytheropteron calcaratum (Seguenza, 1880) Ballent, 1980 † (original description)
Cytheropteron laeve Seguenza, 1880 † (original description)
Cytherura cuneata tenuisculpta Seguenza, 1880 † (original description)
Cytherura inversa Seguenza, 1880 † accepted as Semicytherura inversa (Seguenza, 1880) (original description)
Cytherura lineata subaptera Seguenza, 1880 † (original description)
Cytherura nevroptera Seguenza, 1880 † accepted as Semicytherura nevroptera (Seguenza, 1880) Ascoli, 1965 † (original description)
Cytherura producta microptera Seguenza, 1880 † (original description)
Ilyobates bartonensis brevis Seguenza, 1880 † accepted as Krithe bartonensis brevis (Seguenza, 1880) † (original description)
Ilyobates bartonensis monosteracensis Seguenza, 1880 † accepted as Krithe bartonensis monosteracensis (Seguenza, 1880) † (original description)
Ilyobates compressa Seguenza, 1880 † accepted as Krithe compressa (Seguenza, 1880) † (original description)
Ilyobates compressa antiqua Seguenza, 1880 † accepted as Krithe compressa antiqua (Seguenza, 1880) Ruggieri, 1952 † (original description)
Ilyobates compressa compressa Seguenza, 1880 † accepted as Krithe compressa compressa (Seguenza, 1880) Ruggieri, 1952 † (original description)
Ionicythere parva parva (Seguenza, 1880) Ruggieri, 1991 † (original description)
Krithe compressa antiqua (Seguenza, 1880) Ruggieri, 1952 † (original description)
Krithe compressa compressa (Seguenza, 1880) Ruggieri, 1952 † (original description)
Krithe monosteracensis (Seguenza, 1880) † (original description)
Krithe praetexta monosteracensis (Seguenza, 1880) Colalongo, 1966 † accepted as Krithe monosteracensis (Seguenza, 1880) † (original description)