original description(ofProsycum primordiale Haeckel, 1870)Haeckel, E. (1870). Prodromus of a system of the Calcareous sponges. Annals and Magazine of Natural History. (4) 5: 176-191.[details]
context source (Deepsea)Intergovernmental Oceanographic Commission (IOC) of UNESCO. The Ocean Biogeographic Information System (OBIS), available online athttp://www.iobis.org/[details]
additional sourceVan Soest, R.W.M. (2001). Porifera, in: Costello, M.J. et al. (Ed.) (2001). 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. 50: 85-103. (look up in IMIS) [details]
additional sourceBurton, M. (1930). Norwegian Sponges from the Norman Collection. Proceedings of the Zoological Society of London. 1930 (2): 487-546, pls I-II.[details] Available for editors [request]
additional sourceFerrer Hernández, F. (1918). Esponjas del litoral de Asturias. Trabajos del Museo Nacional de Ciencias Naturales Serie Zoologia. 36: 1-39. page(s): 10 [details]