Vacelet J, Boury-Esnault N, Carnivorous sponges, in Nature, vol. 373, n. 6512, 1995, pp. 333–335.
nih.gov
ncbi.nlm.nih.gov
Medina, M., Collins, A. G., Silberman, J. D., and Sogin, M. L. (2001). "Evaluating hypotheses of basal animal phylogeny using complete sequences of large and small subunit rRNA". Proceedings of the National Academy of Sciences 98 (17): 9707–9712. doi: 10.1073/pnas.171316998. PMC 55517. PMID 11504944.