Pyrgula Pyrgula annulata Opeas List of data deficient molluscs Conradia List of data deficient invertebrates Oscilla (gastropod) List of non-marine molluscs of South Korea List of introduced molluscs of Venezuela Pyrgulopsis Pseudamnicola Hydrobiidae Vermes in the 10th edition of Systema Naturae List of non-marine molluscs of Venezuela List of least concern molluscs Marstonia scalariformis Corded purg New Zealand mud snail 2016 in molluscan paleontology 2015 in molluscan paleontology 2013 in paleomalacology 2014 in molluscan paleontology