Integrative and Comparative Biology, Vol. 53, No. 3 (September 2013), pp. 416-427 (12 pages) The two main scientific tasks of taxonomy are species’ delineation and classification. These two tasks are ...

Marine sponges (phylum Porifera) are among the oldest multicellular animals (metazoans), the sea's most prolific producers of bioactive metabolites, and of considerable ecological importance due to ...