Frýda, J.; Bandel, K. (1997). New Early Devonian gastropods from the Plectonotus (Boucotonotus) - Palaeozygopleura community in the Prague Basin (Bohemia).
Mitteilungen aus dem Geologisch-Paläontologischen Institut der Universitat Hamburg. 80: 1−57, pls. 1−11.