Klautau, M.; Azevedo, F.; Cóndor-Luján, B.; Rapp, H. T.; Collins, A.; Russo, C. A. D. M. (2013). A molecular phylogeny for the order Clathrinida rekindles and refines Haeckel's taxonomic proposal for calcareous sponges. Integrative and Comparative Biology. 53(3): 447-461.