 Rapana venosa MURICIDAE |
 Raphitoma aequalis CONIDAE |
 Raphitoma alternans CONIDAE |
 Raphitoma arnoldi CONIDAE |
 Raphitoma atropurpurea CONIDAE |
 Raphitoma bicolor CONIDAE |
 Raphitoma bofilliana CONIDAE |
 Raphitoma bracteata CONIDAE |
 Raphitoma contigua CONIDAE |
 Raphitoma corbis CONIDAE |
 Raphitoma cordieri CONIDAE |
 Raphitoma cylindracea CONIDAE |
 Raphitoma densa CONIDAE |
 Raphitoma divae CONIDAE |
 Raphitoma echinata CONIDAE |
 Raphitoma fallax CONIDAE |
 Raphitoma horrida CONIDAE |
 Raphitoma intermedia CONIDAE |
 Raphitoma laviae CONIDAE |
 Raphitoma linearis CONIDAE |
 Raphitoma lineolata CONIDAE |
 Raphitoma mirabilis CONIDAE |
 Raphitoma neapolitana CONIDAE |
 Raphitoma nivea CONIDAE |
 Raphitoma papillosa CONIDAE |
 Raphitoma philberti CONIDAE |
 Raphitoma pruinosa CONIDAE |
 Raphitoma pseudohystrix CONIDAE |
 Raphitoma pupoides CONIDAE |
 Raphitoma spadiana CONIDAE |
 Raphitoma villaria CONIDAE |
 Retrotortina fuscata OMALOGYRIDAE |
 Retusa candidula RETUSIDAE |
 Retusa desgenettii RETUSIDAE |
 Retusa dilatata RETUSIDAE |
 Retusa leptoeneilema RETUSIDAE |
 Retusa mammillata RETUSIDAE |
 Retusa minutissima RETUSIDAE |
 Retusa obtusa RETUSIDAE |
 Retusa pellucida RETUSIDAE |
 Retusa truncatula RETUSIDAE |
 Rhinoclavis kochi CERITHIIDAE |
 Rhinodiaphana ventricosa DIAPHANIDAE |
 Rhomboidella prideauxi MYTILIDAE |
 Rhombosepion orbygnyana SEPIIDAE |
 Rhopalomenia aglaopheniae RHOPALOMENIIDAE |
 Ringicula auriculata RINGICULIDAE |
 Ringicula ciommei RINGICULIDAE |
 Ringicula conformis RINGICULIDAE |
 Ringicula gianninii RINGICULIDAE |
 Rioselleolis anadoni FLABELLINIDAE |
 Rissoa aartseni RISSOIDAE |
 Rissoa angustior RISSOIDAE |
 Rissoa auriformis RISSOIDAE |
 Rissoa auriscalpium RISSOIDAE |
 Rissoa decorata RISSOIDAE |
 Rissoa fraunfeldiana RISSOIDAE |
 Rissoa guerinii RISSOIDAE |
 Rissoa italiensis RISSOIDAE |
 Rissoa labiosa RISSOIDAE |
 Rissoa lia RISSOIDAE |
 Rissoa lilacina RISSOIDAE |
 Rissoa monodonta RISSOIDAE |
 Rissoa multicincta RISSOIDAE |
 Rissoa panhormensis RISSOIDAE |
 Rissoa paradoxa RISSOIDAE |
 Rissoa parva RISSOIDAE |
 Rissoa rodhensis RISSOIDAE |
 Rissoa scurra RISSOIDAE |
 Rissoa similis RISSOIDAE |
 Rissoa splendida RISSOIDAE |
 Rissoa torquilla RISSOIDAE |
 Rissoa variabilis RISSOIDAE |
 Rissoa ventricosa RISSOIDAE |
 Rissoa violacea RISSOIDAE |
 Rissoella diaphana RISSOELLIDAE |
 Rissoella globularis RISSOELLIDAE |
 Rissoella inflata RISSOELLIDAE |
 Rissoella opalina RISSOELLIDAE |
 Rissoina bertholleti RISSOIDAE |
 Rissoina bruguieri RISSOIDAE |
 Rissoina spirata RISSOIDAE |
 Roboastra europea POLYCERIDAE |
 Rossia macrostoma SEPIOLIDAE |
 Rostanga anthelia DISCODORIDIDAE |
 Rostanga rubra DISCODORIDIDAE |
 Roxania monterosatoi CYLICHNIDAE |
 Roxania pinguicola CYLICHNIDAE |
 Roxania semilaevis CYLICHNIDAE |
 Roxania utriculus CYLICHNIDAE |
 Rudolphosetia fusca RISSOIDAE |
 Rugulina monterosatoi PENDROMIDAE |
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