World Register of Marine Species (WoRMS)
Verhoeff, T. (2026). World Brachiopoda Database. Hemithiridoidea Rzhonsnitskaia, 1956. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=235195 on 2026-08-24
Rzhonsnitskaya, M. A. (1956). Systematization of Rhynchonellida, pp. 125-126. In: Guzmán, E. (Ed.). Resúmenes de Los Trabajos Presentados. International Geological Congress, Mexico. Report 20.