Aclis bicincta G. Seguenza, 1880 † (original description)
Actaeon bovetensis G. Seguenza, 1880 † (original description)
Agrenocythere pliocenica minor (Seguenza, 1880) † (original description)
Agrenocythere pliocenica pliocenica Seguenza, 1880 † (original description)
Alvania reticulatopunctata G. Seguenza, 1879 † (original description)
Anomalina rotula var. ammoniformis 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)
Biloculina disgiunta Seguenza, 1880 † (original description)
Biloculina larvata var. breviuscula Seguenza, 1880 † (original description)
Biloculina sphaera var. calabra Seguenza, 1880 † (original description)
Bosquetina marginatostriata (Seguenza, 1880) Bold, 1966 † (original description)
Bulimina buchiana var. calabra Seguenza, 1880 † (original description)
Bulimina bulbiformis Seguenza, 1880 † (original description)
Bulimina calcarata Seguenza, 1880 † (original description)
Bulimina incrassata var. elongata Seguenza, 1880 † (original description)
Bulimina ovata var. inflata Seguenza, 1880 † (original description)
Bulimina pupoides var. brevis Seguenza, 1880 † (original description)
Bulimina pyrula var. lata Seguenza, 1880 † (original description)
Bulimina pyrula var. spinosa Seguenza, 1880 † (original description)
Bulla pinguicula G. Seguenza, 1880 accepted as Roxania pinguicula (G. Seguenza, 1880) (original description)
Bulla semilaevis G. Seguenza, 1880 accepted as Roxania semilaevis (G. Seguenza, 1880) (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)
Burseolina Seguenza, 1880 (original description)
Burseolina calabra 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)
Capsulina Seguenza, 1879 † (original description)
Capsulina loculicida Seguenza, 1879 † (original description)
Cardium lunulatum G. Seguenza, 1880 † accepted as Acanthocardia lunulata (G. Seguenza, 1880) † (original description)
Cassidulina alata Seguenza, 1880 † (original description)
Cingula obtusispira G. Seguenza, 1879 † (original description)
Clavulina cylindrica var. major Seguenza, 1880 † (original description)
Clelandella cocchii (G. Seguenza, 1880) † (original description)
Costa edwardsii (Roemer, 1838) † (additional source)
Costa edwardsii radiatoplicata (Seguenza, 1880) † (original description)
Costa edwardsii subinermis (Seguenza, 1880) † (original description)
Cristellaria articulata Seguenza, 1880 † accepted as Vaginulinopsis modesta Thalmann, 1937 † (original description)
Cristellaria discogranulata Seguenza, 1880 † (original description)
Cristellaria legumen Seguenza, 1880 † (original description)
Cristellaria messanensis Seguenza, 1880 † (original description)
Cristellaria minuta Seguenza, 1880 † (original description)
Cristellaria paucisepta Seguenza, 1880 † (original description)
Cristellaria reniformis var. pliocenica Seguenza, 1880 † (original description)
Cristellaria striatissima Seguenza, 1880 † (original description)
Cyphoma bovetensis G. Seguenza, 1880 accepted as Neosimnia spelta (Linnaeus, 1758) accepted as Simnia spelta (Linnaeus, 1758) (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)

Italy for Homotoma cincta G. Seguenza, 1880 † 
Italy for Janira calabra G. Seguenza, 1880 † 
Italy for Janira laevicostata G. Seguenza, 1880 † 
Italy for Janira pumila G. Seguenza, 1880 † 
Italy for Janira rhegiensis G. Seguenza, 1880 † 
Italy for Janira subspinulosus G. Seguenza, 1880 † 
Italy for Pleuronectia difformis G. Seguenza, 1880 † 

 Publication date

 for Alvania reticulatopunctata G. Seguenza, 1879 †

The year of publication is either 1879 or 1880. [details]

 Publication date

 for Rissoa obliquisculpta G. Seguenza, 1880 †

Publication year is either 1879 or 1880. [details]

 Publication date

 for Setia globosa G. Seguenza, 1879 †

Publication year is either 1879 or 1880. This needs further investigation. [details]

 Status

 for Capsulina Seguenza, 1879 †

The original figure shows that this is indeed a pedicellariae, as suggested by Neviania (1905), specifically of the ... [details]

 Status

 for Capsulina loculicida Seguenza, 1879 †

The original figure shows that this is indeed a pedicellariae, as suggested by Neviania (1905), specifically of the ... [details]

 Taxonomy

 for Rissoa aemula Monterosato, 1878

Listed by Seguenza as Rissoa (Cingula) a., in the synonymy of "Cingula" granulum Philippi. [details]