Abra Lamarck, 1818 (original description)
Aenone Lamarck, 1818 † (original description)
Amphidesma Lamarck, 1818 accepted as Semele Schumacher, 1817 (original description)
Anatina Lamarck, 1818 accepted as Laternula Röding, 1798 (original description)
Artemisus Lamarck, 1818 (original description)
Aspergillum Lamarck, 1818 accepted as Brechites Guettard, 1770 (original description)
Avicularia Lamarck, 1818 (original description)
Biapholius Lamarck, 1818 accepted as Hiatella Bosc, 1801 (original description)
Chloeia Lamarck, 1818 (original description)
Cirratulus Lamarck, 1818 (original description)
Clymene Savigny in Lamarck, 1818 (original description)
Crassina Lamarck, 1818 accepted as Astarte J. Sowerby, 1816 (original description)
Cyprina Lamarck, 1818 accepted as Arctica Schumacher, 1817 (original description)
Cyrena Lamarck, 1818 accepted as Corbicula Megerle von Mühlfeld, 1811 (original description)
Cytherina Lamarck, 1818 accepted as Cythere Müller, 1785 (original description)
Erpobdella Lamarck, 1818 (original description)
Euphrosine Lamarck, 1818 (original description)
Galeolaria Lamarck, 1818 (original description)
Gastrochoena Lamarck, 1818 accepted as Gastrochaena Spengler, 1783 (original description)
Glycera Lamarck, 1818 (original description)
Halithea Lamarck, 1818 accepted as Aphrodita Linnaeus, 1758 (original description)
Hepathus Lamarck, 1818 accepted as Hepatus Latreille, 1802 (original description)
Hesione Savigny in Lamarck, 1818 (original description)
Leodice Lamarck, 1818 (original description)
Leptopus Lamarck, 1818 accepted as Phalangipus Latreille, 1828 (original description)
Ligula Lamarck, 1818 (original description)
Lycoris Lamarck, 1818 accepted as Nereis Linnaeus, 1758 (original description)
Lysidice Lamarck, 1818 (original description)
Mysia Lamarck, 1818 (original description)
Oenone Lamarck, 1818 (original description)
Palmyra Savigny in Lamarck, 1818 (original description)
Panopaea Lamarck, 1818 † accepted as Panopea Ménard de la Groye, 1807 (original description)
Panopoea Lamarck, 1818 † accepted as Panopea Ménard de la Groye, 1807 (original description)
Pectinaria Lamarck, 1818 (original description)
Penoeus Lamarck, 1818 accepted as Penaeus Fabricius, 1798 (original description)
Phyllodoce Lamarck, 1818 (original description)
Piscicola Blainville in Lamarck, 1818 (original description)
Piscicola Lamarck, 1818 accepted as Piscicola Blainville in Lamarck, 1818 (original description)
Pleione Lamarck, 1818 accepted as Amphinome Bruguière, 1789 (original description)
Polynoe Lamarck, 1818 (original description)
Psammobia Lamarck, 1818 accepted as Gari Schumacher, 1817 (original description)
Psammotaea Lamarck, 1818 accepted as Gari Schumacher, 1817 (original description)
Sabellaria Lamarck, 1818 (original description)
Septaria Lamarck, 1818 accepted as Kuphus Guettard, 1770 (original description)
Solemya Lamarck, 1818 (original description)
Stenorhynchus Lamarck, 1818 (original description)
Stenorynchus Lamarck, 1818 accepted as Stenorhynchus Lamarck, 1818 (original description)
Syllis Savigny in Lamarck, 1818 (original description)
Tellinides Lamarck, 1818 (original description)
Teredina Lamarck, 1818 † (original description)
Thyasira Lamarck, 1818 (original description)
Trochetia Lamarck, 1818 accepted as Trocheta Dutrochet, 1817 (original description)
Venerupis Lamarck, 1818 (original description)
Vermilia Lamarck, 1818 (original description)