Literature
- Boas, J. E. V. 1885. Vorleufige Mittheilung über einige gymnosomen Pteropoden (Spongiobranchaea d'Orb., Dexiobranchaea n. g., Cliopsis Tr.). Zool. Anz. 210: 688-691.
- Pelseneer, P. 1888b. Report on the Pteropoda collected by H. M. S. Challenger during the years 1873-1876, 3. Anatomy Reports on the scientific. Results of the voyage of H. M. S. Challenger during the years 1873-1876(zool.) 23(2): 1-97, 1 tab., 5 figs, 5 pls.
- Pruvot-Fol, A. 1934c. Note malacologique. A propos du tubercle médian du pied des gymnosomes. Bull. Soc. zool. France 59(4): 291-293.