• Acanthodelphis (Phocaena) philippii Philippi, 1896 accepted as Phocoena spinipinnis (Burmeister, 1865)
• Acanthodelphis spinipinnis Gray, 1868 accepted as Phocoena spinipinnis (Burmeister, 1865)
• Aliama desmarestii Gray, 1864 accepted as Ziphius cavirostris Cuvier, 1823
• Aliama indica Gray, 1865 accepted as Ziphius cavirostris Cuvier, 1823
• Anarnak groenlandicus Lacépède, 1804 (uncertain > nomen dubium)
• Aodon dalei Lesson, 1828 accepted as Mesoplodon bidens (Sowerby, 1804)
• Australophocaena dioptrica (Lahille, 1912) accepted as Phocoena dioptrica Lahille, 1912
• Australophocaena dioptrica Barnes, 1985 accepted as Phocoena dioptrica Lahille, 1912
• Beluga angustata Cope, 1866 accepted as Delphinapterus leucas (Pallas, 1776)
• Beluga borealis Lesson, 1828 accepted as Delphinapterus leucas (Pallas, 1776)
• Beluga canadensis J. A. Allen, 1869 accepted as Delphinapterus leucas (Pallas, 1776)
• Beluga catodon Gray, 1846 accepted as Delphinapterus leucas (Pallas, 1776)
• Beluga concreta Cope, 1865 accepted as Delphinapterus leucas (Pallas, 1776)
• Beluga declivis Cope, 1865 accepted as Delphinapterus leucas (Pallas, 1776)
• Beluga glacialis Lesson, 1828 accepted as Delphinapterus leucas (Pallas, 1776)
• Beluga kingii Gray, 1846 accepted as Delphinapterus leucas (Pallas, 1776)
• Beluga kingii Hector, 1873 (uncertain > nomen dubium)
• Beluga rhinodon Cope, 1865 accepted as Delphinapterus leucas (Pallas, 1776)
• Berardius arnouxi Flower, 1874 accepted as Berardius arnuxii Duvernoy, 1851
• Berardius arnouxii Duvernoy, 1851 accepted as Berardius arnuxii Duvernoy, 1851
• Berardius arnuxi Davies, 1863 accepted as Berardius arnuxii Duvernoy, 1851
• Berardius arnuxi Davies, 1963 accepted as Berardius arnuxii Duvernoy, 1851
• Berardius arnuxii Duvernoy, 1851
• Berardius bairdi Omura, Fujino & Kimura, 1955 accepted as Berardius bairdii Stejneger, 1883
• Berardius bairdi arnuxi Hershkovitz, 1966 accepted as Berardius arnuxi Davies, 1863 accepted as Berardius arnuxii Duvernoy, 1851
• Berardius bairdi bairdi Hershkovitz, 1966 accepted as Berardius bairdii Stejneger, 1883
• Berardius bairdii Stejneger, 1883
• Berardius hectori Gray, 1871 accepted as Mesoplodon hectori (Gray, 1871)
• Berardius hectori Hector, 1874 accepted as Mesoplodon grayi von Haast, 1876
• Berardius minimus Yamada, Kitamura, Abe, Tajima, Matsuda, Mead & Matsuishi, 2019
• Berardius vegaae Trouessart, 1904 accepted as Berardius bairdii Stejneger, 1883
• Berardius vegae Malm, 1883 accepted as Berardius bairdii Stejneger, 1883
• Berardius vegana Bourdelle & Grasse, 1955 accepted as Berardius bairdii Stejneger, 1883
• Callignathus simus Gill, 1871 accepted as Kogia sima (Owen, 1866)
• Catodon (Meganeuron) krefftii Gray, 1865 accepted as Physeter macrocephalus Linnaeus, 1758
• Catodon albicans Lacépède, 1804 accepted as Delphinapterus leucas (Pallas, 1776)
• Catodon australis Wall, 1851 accepted as Physeter macrocephalus Linnaeus, 1758
• Catodon candicans Lesson, 1828 accepted as Delphinapterus leucas (Pallas, 1776)
• Catodon colneti Gray, 1850 accepted as Physeter macrocephalus Linnaeus, 1758
• Catodon macrocephalus Lacépède, 1804 accepted as Physeter macrocephalus Linnaeus, 1758
• Catodon polycyphus Lesson, 1827 (uncertain > nomen dubium)
• Catodon polyscyphus Gray, 1866 (uncertain > nomen dubium)
• Catodon sibbaldi Fleming, 1828 accepted as Delphinapterus leucas (Pallas, 1776)
• Catodon svineval Lacépède, 1804 (uncertain > nomen dubium)
• Cephalorhynchus albifrons True, 1889 accepted as Cephalorhynchus hectori (P. J. Van Beneden, 1881)
• Cephalorhynchus albiventris Fraser, 1938 accepted as Cephalorhynchus eutropia Gray, 1846
• Cephalorhynchus commersoni Yanez, 1948 accepted as Cephalorhynchus commersonii (Lacépède, 1804)
• Cephalorhynchus commersonii (Lacépède, 1804)
• Cephalorhynchus commersonii commersonii (Lacépède, 1804)
• Cephalorhynchus commersonii kerguelensis Robineau, Goodall, Pichler & Baker, 2007
• Cephalorhynchus eutropia Gray, 1846
• Cephalorhynchus heavisidei True, 1889 accepted as Cephalorhynchus heavisidii (Gray, 1828)
• Cephalorhynchus heavisidii (Gray, 1828)
• Cephalorhynchus hectori (P. J. Van Beneden, 1881)
• Cephalorhynchus hectori albus Kerr, 1792 accepted as Delphinapterus leucas (Pallas, 1776)
• Cephalorhynchus hectori bicolor Oliver, 1946 (unaccepted > nomen nudum)
• Cephalorhynchus hectori hectori (P.-J. Van Beneden, 1881)
• Cephalorhynchus hectori maui Baker, Smith & Pichler, 2002
• Cephalorhynchus obtusata True, 1903 accepted as Cephalorhynchus eutropia Gray, 1846
• Cephalorhynchus panope Miller, 1928 accepted as Cephalorhynchus eutropia Gray, 1846
• Cephalorhynchus philippii Trouessart, 1898 accepted as Phocoena spinipinnis (Burmeister, 1865)
• Cephalorhynchus platyrrhinus Trouessart, 1904 accepted as Cephalorhynchus eutropia Gray, 1846
• Ceratodon monodon Pallas, 1811 accepted as Monodon monoceros Linnaeus, 1758
• Ceratodontis ceratodon Brisson, 1762 accepted as Monodon monoceros Linnaeus, 1758
• Cetodiodon hunteri Jacob, 1825 accepted as Hyperoodon ampullatus (Forster, 1770)
• Cetus cylindricus Billberg, 1828 accepted as Physeter macrocephalus Linnaeus, 1758
• Clymene alope Gray, 1866 accepted as Stenella longirostris (Gray, 1828)
• Clymene dorides Gray, 1866 accepted as Stenella coeruleoalba (Meyen, 1833)
• Clymene doris Gray, 1866 accepted as Stenella frontalis (Cuvier, 1829)
• Clymene euphrosyne Gray, 1866 accepted as Stenella coeruleoalba (Meyen, 1833)
• Clymene microps Gray, 1866 accepted as Stenella longirostris (Gray, 1828)
• Clymene normalis Gray, 1866 accepted as Stenella clymene (Gray, 1850)
• Clymene punctata Gray, 1866 accepted as Stenella attenuata (Gray, 1846)
• Clymene similis Gray, 1868 accepted as Sagmatias obscurus (Gray, 1828)
• Clymene stenorhynchus Gray, 1866 accepted as Stenella longirostris (Gray, 1828)
• Clymenia (Electra) thicolea Flower, 1884 accepted as Lissodelphis borealis (Peale, 1848)
• Clymenia (Steno) attenuatus Flower, 1870 represented as Clymenia attenuatus Flower, 1882 accepted as Stenella attenuata (Gray, 1846)
• Clymenia aesthenops Dall in Scammon, 1874 accepted as Stenella coeruleoalba (Meyen, 1833)
• Clymenia alope Gray, 1868 accepted as Stenella longirostris (Gray, 1828)
• Clymenia attenuatus Flower, 1882 accepted as Stenella attenuata (Gray, 1846)
• Clymenia burmeisteri Malm, 1871 accepted as Stenella coeruleoalba (Meyen, 1833)
• Clymenia capensis Flower, 1884 accepted as Stenella attenuata (Gray, 1846)
• Clymenia crotaphisca Dall in Scammon, 1874 accepted as Stenella coeruleoalba (Meyen, 1833)
• Clymenia crotaphiscus Gray, 1871 accepted as Stenella coeruleoalba (Meyen, 1833)
• Clymenia dorides Gray, 1868 accepted as Stenella coeruleoalba (Meyen, 1833)
• Clymenia doris Gray, 1868 accepted as Stenella frontalis (Cuvier, 1829)
• Clymenia dubia (G. Cuvier, 1812) (unaccepted > nomen nudum)
• Clymenia esthenops Gray, 1871 accepted as Stenella coeruleoalba (Meyen, 1833)
• Clymenia euphrosyne Gray, 1868 accepted as Stenella coeruleoalba (Meyen, 1833)
• Clymenia euphrosynoides Gray, 1868 accepted as Stenella coeruleoalba (Meyen, 1833)
• Clymenia fraenata Flower, 1884 accepted as Stenella frontalis (Cuvier, 1829)
• Clymenia frontalis Flower, 1884 accepted as Stenella frontalis (Cuvier, 1829)
• Clymenia gadamu Gray, 1868 (uncertain > nomen dubium)
• Clymenia longirostris Flower, 1884 accepted as Stenella longirostris (Gray, 1828)
• Clymenia microps Gray, 1871 accepted as Stenella longirostris (Gray, 1828)
• Clymenia normalis Gray, 1868 accepted as Stenella clymene (Gray, 1850)
• Clymenia novaezelandiae Hector, 1873 accepted as Stenella coeruleoalba (Meyen, 1833)
• Clymenia obscura Gray, 1868 accepted as Sagmatias obscurus (Gray, 1828)
• Clymenia roseiventris Flower, 1884 accepted as Stenella longirostris (Gray, 1828)
• Clymenia similis Gray, 1868 accepted as Sagmatias obscurus (Gray, 1828)