 Macoma cumana TELLINIDAE |
 Macoma melo TELLINIDAE |
 Macromphalus abylensis VANIKORIDAE |
 Mactra glauca MACTRIDAE |
 Mactra lilacea MACTRIDAE |
 Mactra olorina MACTRIDAE |
 Mactra stultorum MACTRIDAE |
 Madrella aurantiaca MADRELLIDAE |
 Malleus regulus MALLEIDAE |
 Mangelia atlantica CONIDAE |
 Mangelia attenuata CONIDAE |
 Mangelia barashi CONIDAE |
 Mangelia bertrandii CONIDAE |
 Mangelia brusinae CONIDAE |
 Mangelia caerulans CONIDAE |
 Mangelia callosa CONIDAE |
 Mangelia coarctata CONIDAE |
 Mangelia costata CONIDAE |
 Mangelia costulata CONIDAE |
 Mangelia derelicta CONIDAE |
 Mangelia difficilis CONIDAE |
 Mangelia farina CONIDAE |
 Mangelia fieldeni CONIDAE |
 Mangelia goodallii CONIDAE |
 Mangelia jerbaensis CONIDAE |
 Mangelia melitensis CONIDAE |
 Mangelia multilineolata CONIDAE |
 Mangelia nuperrima CONIDAE |
 Mangelia paciniana CONIDAE |
 Mangelia pallaryi CONIDAE |
 Mangelia payraudeaui CONIDAE |
 Mangelia pontica CONIDAE |
 Mangelia sandrii CONIDAE |
 Mangelia scabrida CONIDAE |
 Mangelia secreta CONIDAE |
 Mangelia serga CONIDAE |
 Mangelia sicula CONIDAE |
 Mangelia stossiciana CONIDAE |
 Mangelia striolata CONIDAE |
 Mangelia taeniata CONIDAE |
 Mangelia tenuicosta CONIDAE |
 Mangelia unifasciata CONIDAE |
 Mangelia vauquelini CONIDAE |
 Manupecten pesfelis PECTINIDAE |
 Manzonia crassa RISSOIDAE |
 Marionia blainvillea TRITONIIDAE |
 Marshallora adversa TRIPHORIDAE |
 Martesia striata PHOLADIDAE |
 Mathilda barbadensis MATHILDIDAE |
 Mathilda bieleri MATHILDIDAE |
 Mathilda cochlaeformis MATHILDIDAE |
 Mathilda coronata MATHILDIDAE |
 Mathilda gemmulata MATHILDIDAE |
 Mathilda letei MATHILDIDAE |
 Mathilda quadricarinata MATHILDIDAE |
 Mathilda retusa MATHILDIDAE |
 Megalomphalus azonus VANIKORIDAE |
 Megalomphalus disciformis VANIKORIDAE |
 Megalomphalus petitianus VANIKORIDAE |
 Megaxinus unguiculinus LUCINIDAE |
 Melanella alba EULIMIDAE |
 Melanella boscii EULIMIDAE |
 Melanella compactilis EULIMIDAE |
 Melanella crosseana EULIMIDAE |
 Melanella doederleini EULIMIDAE |
 Melanella frielei EULIMIDAE |
 Melanella glypta EULIMIDAE |
 Melanella lubrica EULIMIDAE |
 Melanella microsculpta EULIMIDAE |
 Melanella monterosatoi EULIMIDAE |
 Melanella petitiana EULIMIDAE |
 Melanella polita EULIMIDAE |
 Melanella praecurta EULIMIDAE |
 Melanella spiridioni EULIMIDAE |
 Melanella stalioi EULIMIDAE |
 Melanella translucens EULIMIDAE |
 Melanochlamys seurati AGLAJIDAE |
 Melarhaphe neritoides LITTORINIDAE |
 Melibe viridis TETHYDIDAE |
 Mendicula ferruginosa THYASIRIDAE |
 Mercenaria mercenaria VENERIDAE |
 Mesalia brevialis TURRITELLIDAE |
 Mesalia mesal TURRITELLIDAE |
 Metaxia bacillum TRIPHORIDAE |
 Metaxia metaxae TRIPHORIDAE |
 Microdrillia loprestiana CONIDAE |
 Microgloma guilonardi NUCULANIDAE |
 Microgloma pusilla NUCULANIDAE |
 Microgloma tumidula NUCULANIDAE |
 Micromenia subrubra DONDERSIIDAE |
 Micropleurotoma spirotropoides TURRIDAE |
 Mikro giustii TURBINIDAE |
 Mimachlamys varia PECTINIDAE |
 Mioerycina coarctata MONTACUTIDAE |
 Miralda elegans PYRAMIDELLIDAE |
 Mitra cornea MITRIDAE |
 Mitra cornicula MITRIDAE |
 Mitra zonata MITRIDAE |
 Mitrella broderipi COLUMBELLIDAE |
 Mitrella bruggeni COLUMBELLIDAE |
 Mitrella coccinea COLUMBELLIDAE |
 Mitrella gervillii COLUMBELLIDAE |
 Mitrella lanceolata COLUMBELLIDAE |
 Mitrella minor COLUMBELLIDAE |
 Mitrella pallaryi COLUMBELLIDAE |
 Mitrella psilla COLUMBELLIDAE |
 Mitrella scripta COLUMBELLIDAE |
 Mitrella swinnei COLUMBELLIDAE |
 Mitromorpha karpathoensis CONIDAE |
 Mitromorpha mediterranea CONIDAE |
 Mitromorpha melitensis CONIDAE |
 Mitromorpha olivoidea CONIDAE |
 Mitromorpha wilheminae CONIDAE |
 Modiolarca subpicta MYTILIDAE |
 Modiolula phaseolina MYTILIDAE |
 Modiolus adriaticus MYTILIDAE |
 Modiolus auriculatus MYTILIDAE |
 Modiolus barbatus MYTILIDAE |
 Modiolus lulat MYTILIDAE |
 Modiolus martorelli MYTILIDAE |
 Moelleriopsis messanensis TURBINIDAE |
 Monophorus alboranensis TRIPHORIDAE |
 Monophorus erythrosoma TRIPHORIDAE |
 Monophorus perversus TRIPHORIDAE |
 Monophorus thiriotae TRIPHORIDAE |
 Monotygma lauta PYRAMIDELLIDAE |
 Montacuta ferruginosa MONTACUTIDAE |
 Montacuta goudi MONTACUTIDAE |
 Montacuta semirubra MONTACUTIDAE |
 Montacuta substriata MONTACUTIDAE |
 Montacuta tenella MONTACUTIDAE |
 Montacuta voeringi MONTACUTIDAE |
 Murchisonella columna EBALIDAE |
 Murex forskoehlii MURICIDAE |
 Murexsul aradasii MURICIDAE |
 Murexsul cevikeri MURICIDAE |
 Muricopsis cristata MURICIDAE |
 Muricopsis ghisottii MURICIDAE |
 Musculista perfragilis MYTILIDAE |
 Musculista senhousia MYTILIDAE |
 Musculus costulatus MYTILIDAE |
 Musculus discors MYTILIDAE |
 Mya arenaria MYIDAE |
 Myoforceps aristata MYTILIDAE |
 Myosotella denticulata ELLOBIIDAE |
 Myosotella myosotis ELLOBIIDAE |
 Myrtea amorpha LUCINIDAE |
 Myrtea spinifera LUCINIDAE |
 Mysella obliquata MONTACUTIDAE |
 Mysia undata PETRICOLIDAE |
 Mytilaster lineatus MYTILIDAE |
 Mytilaster marioni MYTILIDAE |
 Mytilaster minimus MYTILIDAE |
 Mytilaster solidus MYTILIDAE |
 Mytilopsis sallei DREISSENIDAE |
 Mytilus edulis MYTILIDAE |
 Mytilus galloprovincialis MYTILIDAE |
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