The following bibliography has been generated by bringing together all references provided by our content partners. There may be duplication.

References

• Bamfield Marine Sciences Centre, 2004. "Porifera" (On-line). Ocean Link. Accessed January 13, 2005 at http://oceanlink.island.net/ask/porifera.html#anchor22429.
• Barnes, R. 1987. Invertebrate Zoology. Orlando, Florida: Dryden Press.
• Brusca, R., G. Brusca. 2003. Invertebrates. Sunderland, Massachusetts: Sinauer Associates, Inc..
• Dohrmann, M., O. Voigt, D. Erpenbeck and G. Wörheide. 2006. Non-monophyly of most supraspecific taxa of calcareous sponges (Porifera, Calcarea) revealed by increased taxon sampling and partitioned Bayesian analysis of ribosomal DNA. Molecular Phylogenetics and Evolution 40(3):830-843.
• Fujikura K, Lindsay D, Kitazato H, Nishida S, Shirayama. 2010. Marine Biodiversity in Japanese Waters. PLoS ONE 5(8): e11836. doi:10.1371/journal.pone.0011836
• Hooper, John N. A., and Rob W. M. van Soest, eds. 2002. Systema Porifera: A Guide to the Classification of Sponges. xlviii + 1708
• J. J. Sepkoski, Jr. 2002. A compendium of fossil marine animal genera. Bulletins of American Paleontology 363:1-560
• Koziol, C., S. P. Leys, I. M. Müller, and W. E. G. Müller. 1997. Cloning of Hsp70 genes from the marine sponges Sycon raphanus (Calcarea) and Rhabdocalyptus dawsoni (Hexactinellida). An approach to solve the phylogeny of sponges . Biological Journal of the Linnean Society 62:581-592.
• Manuel, M., C. Borchiellini, E. Alivon, Y. Le Parco, J. Vacelet, and N. Boury-Esnault. 2003. Phylogeny and evolution of calcareous sponges: monophyly of calcinea and Calcaronea, high levels of morphological homoplasy, and the primitive nature of axial symmetry. Systematic Biology 52:311-333.
• Wörheide, G. 2002. "Calcarea Introduction" (On-line). Gert Wörheide's homepage about geobiology. Accessed January 13, 2005 at http://wwwuser.gwdg.de/~gwoerhe/calcarea_introduction.html.