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Salani, S., Lotufo, T.M. and Hajdu, E. 2006. Sigmaxinella cearense sp. nov. from sandstone reefs off Fortaleza (Ceara State, Brazil) (Desmacellidae, Mycalina, Poecilosclerida, Demospongiae). Zootaxa. 1369, 1 (Nov. 2006), 43–53. DOI:https://doi.org/10.11646/zootaxa.1369.1.4.