@article {249, title = {Macro- and microstructure of shell and operculum in two Recent gastropod species, Nerita (Theliostyla) albicilla and Cinnalepeta pulchella (Neritopsina: Neritoidea)}, journal = {Paleontological Research}, volume = {5}, year = {2001}, pages = {21-31}, author = {Sasaki, T.} } @article {264, title = {Taxonomic revision of Pisulina (Gastropoda: Neritopsina) from submarine caves in the tropical Indo-Pacific.}, journal = {Paleontological Research}, volume = {4}, year = {2000}, pages = {107-129}, author = {Kano, Yasunori and Kase, T.} }