| [2473] Porhydrus lineatus | Appellations de Taxon | 2473 |
| [24730] Leucosioidea | Appellations de Taxon | 24730 |
| [24731] Lineus | Appellations de Taxon | 24731 |
| [24732] Lioconcha | Appellations de Taxon | 24732 |
| [24733] Lithodesmiales | Appellations de Taxon | 24733 |
| [24734] Lithophyllum | Appellations de Taxon | 24734 |
| [24735] Lithothamnion | Appellations de Taxon | 24735 |
| [24736] Litocorsa | Appellations de Taxon | 24736 |
| [24737] Littorina saxatilis | Appellations de Taxon | 24737 |
| [24738] Lomentaria | Appellations de Taxon | 24738 |
| [24739] Lophosiphonia | Appellations de Taxon | 24739 |
| [2474] Graptodytes bilineatus | Appellations de Taxon | 2474 |
| [24740] Lumbrinerides | Appellations de Taxon | 24740 |
| [24741] Lumbrineriopsis | Appellations de Taxon | 24741 |
| [24742] Lumbrineris | Appellations de Taxon | 24742 |
| [24743] Lysianassa ceratina | Appellations de Taxon | 24743 |
| [24744] Lysianassa costae | Appellations de Taxon | 24744 |
| [24745] Lysianassa insperata | Appellations de Taxon | 24745 |
| [24747] Lysianassa plumosa | Appellations de Taxon | 24747 |
| [24748] Macroclymene santandarensis | Appellations de Taxon | 24748 |
| [24749] Malacoceros indicus | Appellations de Taxon | 24749 |
| [2475] Graptodytes concinnus | Appellations de Taxon | 2475 |
| [24750] Maerella tenuimana | Appellations de Taxon | 24750 |
| [24751] Magelona americana | Appellations de Taxon | 24751 |
| [24752] Majoidea | Appellations de Taxon | 24752 |
| [24753] Maldane glebifex | Appellations de Taxon | 24753 |
| [24754] Mammalia | Appellations de Taxon | 24754 |
| [24755] Mangelia costata | Appellations de Taxon | 24755 |
| [24756] Marphysa adenensis | Appellations de Taxon | 24756 |
| [24757] Mastocarpus | Appellations de Taxon | 24757 |
| [24758] Mediomastus fragilis | Appellations de Taxon | 24758 |
| [24759] Megamphopus cornutus | Appellations de Taxon | 24759 |
| [2476] Graptodytes granularis | Appellations de Taxon | 2476 |
| [24760] Melobesioideae | Appellations de Taxon | 24760 |
| [24761] Membraniporidae | Appellations de Taxon | 24761 |
| [24762] Membranoptera | Appellations de Taxon | 24762 |
| [24763] Metaphoxus fultoni | Appellations de Taxon | 24763 |
| [24764] Metridium senile | Appellations de Taxon | 24764 |
| [24765] Microcardium | Appellations de Taxon | 24765 |
| [24766] Micromaldane ornithochaeta | Appellations de Taxon | 24766 |
| [24767] Modiolarca subpicta | Appellations de Taxon | 24767 |
| [24768] Myriochele heeri | Appellations de Taxon | 24768 |
| [24769] Nannastacidae | Appellations de Taxon | 24769 |
| [2477] Graptodytes pictus | Appellations de Taxon | 2477 |
| [24770] Nannonyx spinimanus | Appellations de Taxon | 24770 |
| [24771] Nereis (Nereis) | Appellations de Taxon | 24771 |
| [24772] Nicomache lumbricalis | Appellations de Taxon | 24772 |
| [24773] Nitophyllum | Appellations de Taxon | 24773 |
| [24774] Nothria | Appellations de Taxon | 24774 |
| [24775] Notomastus (Clistomastus) | Appellations de Taxon | 24775 |