gastéropodes
| Nom | Type | Notoriété | Popularité |
|---|---|---|---|
| Calma | Taxon | 7 | 0.4 |
| Calma Glaucoides | Taxon | 11 | 0.2 |
| Calma Gobioophaga | Taxon | 3 | 0.2 |
| Calmella | Taxon | 7 | 0.4 |
| Calmella Bandeli | Taxon | 3 | 0.2 |
| Calmella Cavolini | Taxon | 6 | 0.3 |
| Caloria | Taxon | 7 | 0.2 |
| Caloria Elegans | Taxon | 8 | 0.1 |
| Calpurnus Verrucosus | Taxon | 9 | 0.2 |
| Calycidorididae | Taxon | 7 | 0.1 |
| Calyptraea | Taxon | 9 | 0.1 |
| Calyptraea Chinensis | Taxon | 12 | 1.8 |
| Calyptraeidae | Taxon | 15 | 1.2 |
| Camachoaglaja | Taxon | 4 | 0.1 |
| Camaenidae | Taxon | 17 | 0.6 |
| Campaniloidea | Taxon | 7 | 0.0 |
| Campylorhaphion | Taxon | 4 | 0.0 |
| Canariellidae | Taxon | 6 | 0.0 |
| Canarium | Taxon | 6 | 0.6 |
| Canarium Erythrinum | Taxon | 7 | 0.1 |
| Canarium Urceus | Taxon | 8 | 0.4 |
| Cancellaria | Taxon | 7 | 0.1 |
| Cancellaria Elegans | Taxon | 1 | 0.1 |
| Cancellariidae | Taxon | 11 | 0.3 |
| Candidula | Taxon | 9 | 0.6 |
| Candidula Setubalensis | Taxon | 8 | 0.5 |
| Cantareus | Taxon | 7 | 1.1 |
| Cantharus | Taxon | 8 | 0.3 |
| Capulidae | Taxon | 14 | 0.3 |
| Capulus | Taxon | 11 | 0.2 |
| Capulus Elegans | Taxon | 2 | 0.1 |
| Capulus Elegans | Taxon | 4 | 0.0 |
| Capulus Ungaricus | Taxon | 13 | 0.3 |
| Cardiapoda | Taxon | 6 | 0.0 |
| Carinaria | Taxon | 10 | 0.4 |
| Carinariidae | Taxon | 14 | 0.2 |
| Carpiscula | Taxon | 7 | 0.1 |
| Casmaria | Taxon | 5 | 0.8 |
| Cassidae | Taxon | 18 | 1.4 |
| Cassis | Taxon | 15 | 1.4 |
| Cassis Cornuta | Taxon | 16 | 2.1 |
| Cassis Madagascariensis | Taxon | 8 | 1.5 |
| Cassis Tessellata | Taxon | 7 | 0.2 |
| Cassis Tuberosa | Taxon | 10 | 0.6 |
| Catriona | Taxon | 9 | 0.1 |
| Cauri | Taxon | 23 | 48.3 |
| Cavolinia Tridentata | Taxon | 10 | 0.4 |
| Cepaea | Taxon | 21 | 1.1 |
| Cepaea Sylvatica | Taxon | 9 | 1.4 |
| Cepaea Vindobonensis | Taxon | 4 | 1.3 |