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West RR, Vacelet J, Wood RA, Willenz P, Hartman WD. Treatise Online no. 58: Part E, Revised, Volume 4, Chapter 4A–B: Hypercalcified extant and fossil chaetetid-type and Post-Devonian stromatoporoid-type Demospongiae: Systematic descriptions. TREON. Published online February 4, 2013. doi:10.17161/to.v0i0.4447