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.

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.