Spongioradsia
Spongioradsia is a genus of polyplacophoran molluscs. Spongioradsia became extinct during the Oligocene period.
Species
Spongioradsia aleutica;Synonyms:Spongioradsia foveolata Is. Taki, 1938: synonym of Callochiton foveolatus Spongioradsia subaleutica Sirenko, 1976: synonym of ''Lepidochitona subaleutica''