Axinopsida orbiculata (G. O. Sars, 1878) (additional source)
Axinulus (Axinulus) A. E. Verrill & K. J. Bush, 1898 represented as Axinulus A. E. Verrill & K. J. Bush, 1898 (basis of record)
Axinulus (Axinulus) brevis (A. E. Verrill & K. J. Bush, 1898) represented as Axinulus brevis (A. E. Verrill & K. J. Bush, 1898) (basis of record)
Axinulus (Axinulus) croulinensis (Jeffreys, 1847) represented as Axinulus croulinensis (Jeffreys, 1847) (basis of record)
Axinulus (Genaxinus) Iredale, 1930 accepted as Genaxinus Iredale, 1930 (basis of record)
Axinulus (Genaxinus) eumyarius (M. Sars, 1870) accepted as Genaxinus eumyarius (M. Sars, 1870) (basis of record)
Axinus croulinensis (Jeffreys, 1847) sensu Jeffreys, 1864 accepted as Thyasira obsoleta (A. E. Verrill & K. J. Bush, 1898) (source of synonymy)
Axinus eumyarius M. Sars, 1870 accepted as Genaxinus eumyarius (M. Sars, 1870) (basis of record)
Axinus ferrugineus Locard, 1886 accepted as Mendicula ferruginosa (Forbes, 1844) (basis of record)
Axinus ferrugineus Locard, 1886 accepted as Mendicula ferruginosa (Forbes, 1844) (source of synonymy)
Axinus flexuosus (Montagu, 1803) accepted as Thyasira flexuosa (Montagu, 1803) (source of synonymy)
Axinus flexuosus (Montagu, 1803) accepted as Thyasira flexuosa (Montagu, 1803) (basis of record)
Axinus gouldii (R. A. Philippi, 1845) accepted as Thyasira gouldii (R. A. Philippi, 1845) (basis of record)
Axinus gouldii (R. A. Philippi, 1845) accepted as Thyasira gouldii (R. A. Philippi, 1845) (source of synonymy)
Axinus granulosus Monterosato, 1874 accepted as Thyasira granulosa (Monterosato, 1874) accepted as Parathyasira granulosa (Monterosato, 1874) (basis of record)
Axinus incrassatus Jeffreys, 1876 accepted as Leptaxinus incrassatus (Jeffreys, 1876) (basis of record)
Axinus sarsii R. A. Philippi, 1845 accepted as Thyasira sarsii (R. A. Philippi, 1845) (basis of record)
Axinus sarsii R. A. Philippi, 1845 accepted as Thyasira sarsii (R. A. Philippi, 1845) (source of synonymy)
Clausina Jeffreys, 1847 accepted as Mendicula Iredale, 1924 (basis of record)
Clausina croulinensis Jeffreys, 1847 accepted as Axinulus croulinensis (Jeffreys, 1847) (source of synonymy)
Clausina croulinensis Jeffreys, 1847 accepted as Axinulus croulinensis (Jeffreys, 1847) (basis of record)
Cryptodon equalis A. E. Verrill & K. J. Bush, 1898 accepted as Parathyasira equalis (A. E. Verrill & K. J. Bush, 1898) (basis of record)
Cryptodon equalis A. E. Verrill & K. J. Bush, 1898 accepted as Parathyasira equalis (A. E. Verrill & K. J. Bush, 1898) (source of synonymy)
Cryptodon obsoletus A. E. Verrill & K. J. Bush, 1898 accepted as Thyasira obsoleta (A. E. Verrill & K. J. Bush, 1898) (basis of record)
Cryptodon obsoletus A. E. Verrill & K. J. Bush, 1898 accepted as Thyasira obsoleta (A. E. Verrill & K. J. Bush, 1898) (source of synonymy)
Kellia ferruginosa Forbes, 1844 accepted as Mendicula ferruginosa (Forbes, 1844) (basis of record)
Kellia ferruginosa Forbes, 1844 accepted as Mendicula ferruginosa (Forbes, 1844) (source of synonymy)
Mendicula Iredale, 1924 (basis of record)
Mendicula ferruginosa (Forbes, 1844) (basis of record)
Mendicula pygmaea (A. E. Verrill & K. J. Bush, 1898) (basis of record)
Parathyasira Iredale, 1930 (source of synonymy)
Tellina flexuosa Montagu, 1803 accepted as Thyasira flexuosa (Montagu, 1803) (basis of record)
Tellina flexuosa Montagu, 1803 accepted as Thyasira flexuosa (Montagu, 1803) (source of synonymy)
Thyasira (Parathyasira) Iredale, 1930 accepted as Parathyasira Iredale, 1930 (basis of record)
Thyasira (Parathyasira) dunbari Lubinsky, 1976 accepted as Parathyasira dunbari (Lubinsky, 1976) (basis of record)
Thyasira (Thyasira) Lamarck, 1818 represented as Thyasira Lamarck, 1818 (basis of record)
Thyasira (Thyasira) polygona (Jeffreys, 1864) represented as Thyasira polygona (Jeffreys, 1864) (basis of record)
Thyasira equalis (A. E. Verrill & K. J. Bush, 1898) accepted as Parathyasira equalis (A. E. Verrill & K. J. Bush, 1898) (additional source)
Thyasira flexuosa (Montagu, 1803) (additional source)
Thyasira gouldii (R. A. Philippi, 1845) (additional source)
Thyasira granulosa (Monterosato, 1874) accepted as Parathyasira granulosa (Monterosato, 1874) (additional source)
Thyasira obsoleta (A. E. Verrill & K. J. Bush, 1898) (additional source)
Thyasira sarsii (R. A. Philippi, 1845) (additional source)
Thyasira subovata (Jeffreys, 1881) (additional source)
Thyasira succisa (Jeffreys, 1876) (additional source)

 Type locality

 for Axinulus (Axinulus) croulinensis (Jeffreys, 1847)

Off the Crowlin Islands, between Skye and Scotish mainland, Inner Hebrides [details]

 Type locality

 for Axinulus (Genaxinus) eumyarius (M. Sars, 1870)

Vallo-Dyb (Cristiansfjord, Norway), Lofoten, Hardangerfjord [details]

 Type locality

 for Mendicula ferruginosa (Forbes, 1844)

Off Crete, Mediterranean [details]

 Type locality

 for Mendicula pygmaea (A. E. Verrill & K. J. Bush, 1898)

Off Nova Scotia [details]

 Type locality

 for Thyasira equalis (A. E. Verrill & K. J. Bush, 1898)

Gulf of Maine [details]

 Type locality

 for Thyasira flexuosa (Montagu, 1803)

Falmouth Harbour, Cornwall [details]

 Type locality

 for Thyasira gouldii (R. A. Philippi, 1845)

Off Massachusetts, USA [details]

 Type locality

 for Thyasira granulosa (Monterosato, 1874)

Probably Cape Santo Vito, Sicily [details]

 Type locality

 for Thyasira obsoleta (A. E. Verrill & K. J. Bush, 1898)

Off Martha's Vineyard [details]

 Type locality

 for Thyasira sarsii (R. A. Philippi, 1845)

Norvegian seas [details]

 Type locality

 for Thyasira succisa (Jeffreys, 1876)

Adventure Bank, Mediterranean [details]