| [21727] Calliostoma echinatum | Appellations de Taxon | 21727 |
| [21728] Calliostoma fernandezi | Appellations de Taxon | 21728 |
| [21729] Calliostoma hassler | Appellations de Taxon | 21729 |
| [2173] Pomatoschistus | Appellations de Taxon | 2173 |
| [21730] Calliostoma rosewateri | Appellations de Taxon | 21730 |
| [21731] Calliostoma rude | Appellations de Taxon | 21731 |
| [21732] Calliostoma sapidum | Appellations de Taxon | 21732 |
| [21733] Calliostoma scurra | Appellations de Taxon | 21733 |
| [21734] Calliostoma semisuave | Appellations de Taxon | 21734 |
| [21735] Calliostomatidae | Appellations de Taxon | 21735 |
| [21736] Calopterygoidea | Appellations de Taxon | 21736 |
| [21737] Calyptraea | Appellations de Taxon | 21737 |
| [21738] Calyptraea centralis | Appellations de Taxon | 21738 |
| [21739] Calyptraeidae | Appellations de Taxon | 21739 |
| [2174] Pomatoschistus minutus | Appellations de Taxon | 2174 |
| [21740] Calyptraeoidea | Appellations de Taxon | 21740 |
| [21741] Camelobaetidius | Appellations de Taxon | 21741 |
| [21742] Camelobaetidius billi | Appellations de Taxon | 21742 |
| [21743] Camelobaetidius cayumba | Appellations de Taxon | 21743 |
| [21744] Camelobaetidius janae | Appellations de Taxon | 21744 |
| [21745] Camelobaetidius matilei | Appellations de Taxon | 21745 |
| [21746] Camelobaetidius ortizi | Appellations de Taxon | 21746 |
| [21747] Campsurinae | Appellations de Taxon | 21747 |
| [21748] Campsurus | Appellations de Taxon | 21748 |
| [21749] Campsurus albifilum | Appellations de Taxon | 21749 |
| [2175] Ictaluridae | Appellations de Taxon | 2175 |
| [21750] Campylocia | Appellations de Taxon | 21750 |
| [21751] Campylocia anceps | Appellations de Taxon | 21751 |
| [21752] Cancellaria | Appellations de Taxon | 21752 |
| [21753] Cancellaria reticulata | Appellations de Taxon | 21753 |
| [21754] Cancellariidae | Appellations de Taxon | 21754 |
| [21755] Cancellariinae | Appellations de Taxon | 21755 |
| [21756] Cancellarioidea | Appellations de Taxon | 21756 |
| [21757] Capulidae | Appellations de Taxon | 21757 |
| [21758] Capuloidea | Appellations de Taxon | 21758 |
| [21759] Capulus | Appellations de Taxon | 21759 |
| [2176] Ictalurus | Appellations de Taxon | 2176 |
| [21760] Capulus incurvus | Appellations de Taxon | 21760 |
| [21761] Capulus ungaricus | Appellations de Taxon | 21761 |
| [21762] Cardioidea | Appellations de Taxon | 21762 |
| [21763] Cassis | Appellations de Taxon | 21763 |
| [21764] Cassis madagascariensis | Appellations de Taxon | 21764 |
| [21765] Cassis tuberosa | Appellations de Taxon | 21765 |
| [21766] Castalia | Appellations de Taxon | 21766 |
| [21767] Castalia sulcata | Appellations de Taxon | 21767 |
| [21768] Cavilinga | Appellations de Taxon | 21768 |
| [21769] Cavilinga blanda | Appellations de Taxon | 21769 |
| [2177] Ameiurus melas | Appellations de Taxon | 2177 |
| [21770] Cavolinia | Appellations de Taxon | 21770 |
| [21771] Cavolinia uncinata | Appellations de Taxon | 21771 |