- GeoRef, Copyright 2004, American Geological Institute. Reference includes data from Bibliography and Index of Geology Exclusive of North America, Geological Society of America, Boulder, CO, United States
Continues the discussion of T. C. Yen's recently established genus Bathonella. On the basis of associated fossils in various localities, it is concluded that the evidence points to a brackish-water habitat which was inhabited at times by marine forms. Consequently, it may be more desirable to maintain a generic separation, even with the small differences in shells, inasmuch as the name Viviparus connotes fresh-water conditions.