Templat:TreatiseH

Williams, Alwyn; Carlson, S.J.; Brunton, C.H.C.; Holmer, L.E.; Popov, L.E.; Mergl, M.; Laurie, J.R.; Bassett, M.G.; Cocks, L.R.M.; Rong, J.-Y.; et al. (2000). Paul Selden, ed. "Part H, Brachiopoda. Linguliformea, Craniiformea, and Rhynchonelliformea". Treatise on Invertebrate Paleontology. Geological Society of America.