J.  Marwick, ?Some new genera of the Myalinidae and Pteriidae of New Zealand?, Transactions and Proceedings of the Royal Society of New Zealand, vol. 65, Part 3, pp. 295-303, 1935.

B.  Likharev, ?Permskaya sistema?, Atlas rukovodiashchikh form iskopaemykh faun SSSR, vol. 6. GONTI NKTP SSSR, Leningrad, Moskva, p. ??, 1939.

P.  Fischer, Manuel de cochyliologie et de paléontologie conchyliologique ou histoire naturelle des mollusques vivants et fossiles suivi d'un appendice sur les brachiopodes, vol. 2, 2 vol. Paris: F. Savy, 1887, p. xxiv+1369.

L. R.  Cox, ?Notes on Jurassic Lamellibranchia. VII. On the identity of Echinotis Marwick with Meleagrinella Whitfield?, Proceedings of the Malacological Society of London, vol. 24, pp. 133-135, 1941.

A.  Borissjak, ?Die Pelecypoden der Jura-Ablagerungen im Europaeischen Russland. IV. Aviculidae/Pelectpoda yurskikh otlozhenij evropejskoj Rossii. IV. Aviculidae?, Mémoires du Comité Géologique. Nouvelle Série/Trudy Geologicheskogo Komiteta. Novaya seriya, vol. 44, pp. 1-26, 1909.

B.  Likharev, ?Permskaya sistema?, Atlas rukovodiashchikh form iskopaemykh faun SSSR, vol. 6. GONTI NKTP SSSR, Leningrad, Moskva, 1939.

J.  Marwick, ?Some new genera of the Myalinidae and Pteriidae of New Zealand?, Transactions and Proceedings of the Royal Society of New Zealand, vol. 65, Part 3, pp. 295-303, 1935.