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Wörheide, G. (1998). The Reef Cave Dwelling Ultraconservative Coralline Demosponge Astrosclera willeyana Lister 1900 from the Indo-Pacific. Micromorphology, Ultrastructure, Biocalcification, Isotope Record, Taxonomy, Biogeography, Phylogeny. Facies. 38: 1-88.