Date: 2013-02-04 07:15:31Elimia Lithasia Viviparus Rugged hornsnail Pleurocera Geniculate river snail Planorbella Freshwater snail Pleuroceridae Phyla Protostome | | Plate 3. Apertural views of assorted North American freshwater gastropods. Top Row (L-R): Planorbella trivolvis, USNM[removed], Joliet, Illinois; Viviparus subpurpureus, ANSP[removed], Wabash River, Indiana; Vorticifex effusAdd to Reading ListSource URL: fl.biology.usgs.govDownload Document from Source Website File Size: 353,85 KBShare Document on Facebook
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