| [21635] Tellina fausta | Appellations de Taxon | 21635 |
| [21636] Arcopsis | Appellations de Taxon | 21636 |
| [21637] Arcopsis adamsi | Appellations de Taxon | 21637 |
| [21638] Arctoperlaria | Appellations de Taxon | 21638 |
| [21639] Argia fumigata | Appellations de Taxon | 21639 |
| [2164] Gasterosteus | Appellations de Taxon | 2164 |
| [21640] Argia insipida | Appellations de Taxon | 21640 |
| [21641] Argia oculata | Appellations de Taxon | 21641 |
| [21642] Argiolestinae | Appellations de Taxon | 21642 |
| [21643] Argopecten | Appellations de Taxon | 21643 |
| [21644] Argopecten gibbus | Appellations de Taxon | 21644 |
| [21645] Argopecten noronhensis | Appellations de Taxon | 21645 |
| [21646] Argopecten nucleus | Appellations de Taxon | 21646 |
| [21647] Argyrothemis | Appellations de Taxon | 21647 |
| [21648] Argyrothemis argentea | Appellations de Taxon | 21648 |
| [21649] Aroapyrgus | Appellations de Taxon | 21649 |
| [2165] Gasterosteus aculeatus aculeatus | Appellations de Taxon | 2165 |
| [21650] Aroapyrgus vivens | Appellations de Taxon | 21650 |
| [21651] Asolene | Appellations de Taxon | 21651 |
| [21652] Asolene crassa | Appellations de Taxon | 21652 |
| [21653] Asolene granulosa | Appellations de Taxon | 21653 |
| [21654] Asolene sinamarina | Appellations de Taxon | 21654 |
| [21655] Aspellinae | Appellations de Taxon | 21655 |
| [21656] Astyris | Appellations de Taxon | 21656 |
| [21657] Astyris lunata | Appellations de Taxon | 21657 |
| [21658] Atalophlebiinae | Appellations de Taxon | 21658 |
| [21659] Atrina | Appellations de Taxon | 21659 |
| [2166] Pungitius | Appellations de Taxon | 2166 |
| [21660] Atrina seminuda | Appellations de Taxon | 21660 |
| [21661] Atrina serrata | Appellations de Taxon | 21661 |
| [21662] Aturbina | Appellations de Taxon | 21662 |
| [21663] Aturbina georgei | Appellations de Taxon | 21663 |
| [21664] Axelella | Appellations de Taxon | 21664 |
| [21665] Axelella scalatella | Appellations de Taxon | 21665 |
| [21666] Aylacostoma | Appellations de Taxon | 21666 |
| [21667] Aylacostoma atra | Appellations de Taxon | 21667 |
| [21668] Aylacostoma devians | Appellations de Taxon | 21668 |
| [21669] Aylacostoma hohenackeri | Appellations de Taxon | 21669 |
| [2167] Pungitius pungitius | Appellations de Taxon | 2167 |
| [21670] Babelomurex | Appellations de Taxon | 21670 |
| [21672] Baetinae | Appellations de Taxon | 21672 |
| [21673] Baetoidea | Appellations de Taxon | 21673 |
| [21674] Barbatia | Appellations de Taxon | 21674 |
| [21675] Barbatia cancellaria | Appellations de Taxon | 21675 |
| [21676] Barnea | Appellations de Taxon | 21676 |
| [21677] Barnea truncata | Appellations de Taxon | 21677 |
| [21678] Basterotia | Appellations de Taxon | 21678 |
| [21679] Basterotia elliptica | Appellations de Taxon | 21679 |
| [2168] Gobiidae | Appellations de Taxon | 2168 |
| [21680] Bellaspira | Appellations de Taxon | 21680 |