original descriptionPopov, L. E.; Basset, M. G.; Holmer, L. E.; Laurie, J. (1993). Phylogenetic analysis of higher taxa of Brachiopoda. <em>Lethaia.</em> 26(1): 1-5., available online athttps://doi.org/10.1111/j.1502-3931.1993.tb01502.x[details]
basis of recordHowson, C.M. (2001). Brachiopoda, <B><I>in</I></B>: Costello, M.J. <i>et al.</i> (Ed.) (2001). <i>European register of marine species: a check-list of the marine species in Europe and a bibliography of guides to their identification. Collection Patrimoines Naturels,</i> 50: pp. 334 (look up in IMIS) [details]
additional sourceKaesler, R.L. (Ed.). (1997-2008). Brachiopoda. Treatise on Invertebrate Paleontology, Part H: Brachiopoda Revised. Geological Society of America, Boulder. University of Kansas Press, Lawrence, vol. 1-6.[details]