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World Porifera Database - Species - Spiroxya levispira (Topsent, …
World Porifera Database - Species - Spiroxya Topsent, 1896
Spiroxya levispira - mindat.org
Foraminifera - The World Foraminifera Database - WoRMS
MarBEF Data System - ERMS - Cliona levispira Topsent, 1898
MarBEF Data System - ERMS - Spiroxya Topsent, 1896
Miocene sponge assemblages in the face of the Messinian Salinity …
Marine Species Traits
Spiroxya - mindat.org
Spiroxya - taxref.mnhn.fr