Costifer is a genus in the monotypic family Isoraphiniidae of sea sponges, and was first described by Henry Van Peters Wilson in 1925.Wilson, H. V. (1925). Silicious and horny sponges collected by the U.S. Fisheries Steamer ‘Albatross’ during the Philippine Expedition,1907-10. pp. 273-532, pls 37-52. In: Contributions to the biology of the Philippine Archipelago and adjacent regions. Bulletin of the United States National Museum, 100 (2, part 4).
Species There are two recognized species: Costifer vasiformis Wilson, 1925 Costifer wilsoni Lévi, 1993
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