Cooper, G. A. (1973). Fossil and recent Cancellothyridacea (Brachiopoda). Tohoku Imperial University, Science Reports (series 2, Geology), Special Volume (Hatai Memorial Volume). 6: 371-390, 5 plates.

additional source

King, W. (1871). On Agulhasia davidsonii, a new palliobranchiate genus and species. Annals and Magazine of Natural History (series 4). 7:109–112, pl. 11.

original description

Logan, A. (2007). Geographic distribution of extant articulated brachiopods. In: Treatise on Invertebrate Paleontology, Part H, Brachiopoda (revised), vol.6, 3082–3115. Geological Society of America, Boulder, Colorado, and University of Kansas Press, Lawrence, Kansas.

basis of record