Contents of World Wide Malacological CATalog (Europa)
Classification elements
| subclassis | n. | 6 |
| superordo | n. | 1 |
| ordo | n. | 9 |
| subordo | n. | 7 |
| superfamilia | n. | 31 |
| familia | n. | 63 |
| subfamilia | n. | 63 |
| tribus | n. | 2 |
| genus | n. | 311 |
| subgenus | n. | 1 |
| speciem | n. | 1969 |
| sinonim | n. | 0 |
Numbers of species included into each familia
| CLASSIS GASTROPODA | | |
| familia | hydorocenidae | 3 |
| familia | aciculidae | 35 |
| familia | hydrobiidae | 114 |
| familia | iravadiidae | 4 |
| familia | bithyniidae | 2 |
| familia | viviparidae | 6 |
| familia | ampullariidae | 1 |
| familia | cyclophoridae | 1 |
| familia | diplommatinidae | 43 |
| familia | thiaridae | 1 |
| familia | melanopsidae | 7 |
| familia | pleuroceridae | 3 |
| familia | pomatiasidae | 7 |
| familia | truncatellidae | 3 |
| familia | valvatidae | 9 |
| familia | carychiidae | 8 |
| familia | acroloxidae | 1 |
| familia | lymnaeidae | 15 |
| familia | physidae | 4 |
| familia | planorbidae | 24 |
| familia | ancylidae | 3 |
| familia | cochlicopidae | 9 |
| familia | pupillidae | 79 |
| familia | valloniidae | 20 |
| familia | vertiginidae | 35 |
| familia | orculidae | 30 |
| familia | pleurodiscidae | 2 |
| familia | pyramidulidae | 2 |
| familia | chondrinidae | 54 |
| familia | buliminidae | 91 |
| familia | clausiliidae | 344 |
| familia | orthalicidae | 11 |
| familia | ferussaciidae | 32 |
| familia | subulinidae | 4 |
| familia | achatinidae | 1 |
| familia | spiraxidae | 3 |
| familia | testacellidae | 3 |
| familia | streptaxidae | 1 |
| familia | endodontidae | 2 |
| familia | punctidae | 4 |
| familia | helicodiscidae | 2 |
| familia | discidae | 6 |
| familia | succineidae | 12 |
| familia | euconulidae | 4 |
| familia | helixarionidae | 3 |
| familia | vitrinidae | 83 |
| familia | zonitidae | 164 |
| familia | daudebardiidae | 25 |
| familia | parmacellidae | 1 |
| familia | milacidae | 17 |
| familia | limacidae | 88 |
| familia | boettgerillidae | 1 |
| familia | sphincterochilidae | 4 |
| familia | hygromiidae | 66 |
| familia | helicellidae | 115 |
| familia | helicidae | 284 |
| familia | bradybaenidae | 2 |
| CLASSIS BIVALVIA | | |
| familia | arionidae | 30 |
| familia | margaritiferidae | 2 |
| familia | unionidae | 16 |
| familia | etheriidae | 1 |
| familia | dreissenidae | 3 |
| errors | n. | 0 |