| [24820] Phyllophoridae | Appellations de Taxon | 24820 |
| [24821] Physonectae | Appellations de Taxon | 24821 |
| [24822] Pilargis | Appellations de Taxon | 24822 |
| [24823] Pillucina | Appellations de Taxon | 24823 |
| [24824] Pinnotheroidea | Appellations de Taxon | 24824 |
| [24825] Piromis eruca | Appellations de Taxon | 24825 |
| [24826] Pisionacea | Appellations de Taxon | 24826 |
| [24827] Pista brevibranchiata | Appellations de Taxon | 24827 |
| [24828] Plocamium | Appellations de Taxon | 24828 |
| [24829] Plumaria | Appellations de Taxon | 24829 |
| [2483] Stictonectes escheri | Appellations de Taxon | 2483 |
| [24830] Poecilochaetus | Appellations de Taxon | 24830 |
| [24831] Polyneura | Appellations de Taxon | 24831 |
| [24832] Polynoinae | Appellations de Taxon | 24832 |
| [24833] Polysiphonia | Appellations de Taxon | 24833 |
| [24834] Poromyoidea | Appellations de Taxon | 24834 |
| [24835] Porphyra linearis | Appellations de Taxon | 24835 |
| [24836] Portunoidea | Appellations de Taxon | 24836 |
| [24837] Praxillura | Appellations de Taxon | 24837 |
| [24838] Prionospio ehlersi | Appellations de Taxon | 24838 |
| [24839] Proclymene muelleri | Appellations de Taxon | 24839 |
| [2484] Stictonectes lepidus | Appellations de Taxon | 2484 |
| [24840] Protodorvillea | Appellations de Taxon | 24840 |
| [24841] Pseudocuma (Pseudocuma) simile | Appellations de Taxon | 24841 |
| [24842] Pseudopotamilla reniformis | Appellations de Taxon | 24842 |
| [24843] Pterosiphonia | Appellations de Taxon | 24843 |
| [24844] Pterothamnion | Appellations de Taxon | 24844 |
| [24845] Pupa | Appellations de Taxon | 24845 |
| [24846] Pusillina | Appellations de Taxon | 24846 |
| [24847] Pyramidella terebellum | Appellations de Taxon | 24847 |
| [24848] Pyrene | Appellations de Taxon | 24848 |
| [24849] Pyrocystis | Appellations de Taxon | 24849 |
| [2485] Stictonectes optatus | Appellations de Taxon | 2485 |
| [24850] Radicilingua | Appellations de Taxon | 24850 |
| [24851] Ralfsia | Appellations de Taxon | 24851 |
| [24852] Rhodophyllis | Appellations de Taxon | 24852 |
| [24853] Rhodothamniella | Appellations de Taxon | 24853 |
| [24854] Rhodymenia | Appellations de Taxon | 24854 |
| [24855] Rissoa | Appellations de Taxon | 24855 |
| [24856] Rytiphloea | Appellations de Taxon | 24856 |
| [24857] Sabellaria alcocki | Appellations de Taxon | 24857 |
| [24858] Sabellinae | Appellations de Taxon | 24858 |
| [24859] Saccharina | Appellations de Taxon | 24859 |
| [2486] Deronectes aubei | Appellations de Taxon | 2486 |
| [24860] Saccocirrus papillocercus | Appellations de Taxon | 24860 |
| [24861] Saccorhiza | Appellations de Taxon | 24861 |
| [24862] Sagartia troglodytes | Appellations de Taxon | 24862 |
| [24863] Samytha | Appellations de Taxon | 24863 |
| [24864] Sargassum muticum | Appellations de Taxon | 24864 |
| [24865] Scalibregma celticum | Appellations de Taxon | 24865 |