Contents of World Wide Malacological CATalog (Californian)
Classification elements
| subclassis | n. | 13 |
| superordo | n. | 1 |
| ordo | n. | 38 |
| subordo | n. | 25 |
| superfamilia | n. | 84 |
| familia | n. | 241 |
| subfamilia | n. | 233 |
| tribus | n. | 28 |
| genus | n. | 934 |
| subgenus | n. | 0 |
| speciem | n. | 6684 |
| sinonim | n. | 138 |
Numbers of species included into each familia
| CLASSIS CAUDOFOVEATA | | |
| familia | limifossoridae | 54 |
| familia | prochaetodermatidae | 1 |
| familia | chaetodermidae | 15 |
| CLASSIS SOLENOGASTRES | | |
| familia | falcidentidae | 3 |
| familia | dondersiidae | 3 |
| familia | amphimeniidae | 2 |
| CLASSIS POLYPLACOPHORA | | |
| familia | proneomeniidae | 3 |
| familia | leptochitonidae | 6 |
| familia | hanleyidae | 2 |
| familia | ischnochitonidae | 119 |
| familia | mopaliidae | 32 |
| familia | chitonidae | 4 |
| CLASSIS GASTROPODA | | |
| familia | acanthochitonidae | 6 |
| familia | acmaeidae | 24 |
| familia | lottiidae | 8 |
| familia | patellidae | 1 |
| familia | nacellidae | 2 |
| familia | lepetidae | 3 |
| familia | cocculinidae | 14 |
| familia | bathysciadiidae | 1 |
| familia | addisoniidae | 1 |
| familia | choristellidae | 2 |
| familia | fissurellidae | 111 |
| familia | scissurellidae | 6 |
| familia | haliotidae | 18 |
| familia | pleurotomariidae | 1 |
| familia | seguenziidae | 16 |
| familia | turbinidae | 99 |
| familia | trochidae | 181 |
| familia | skeneidae | 63 |
| familia | lissospiridae | 26 |
| familia | pelycidiidae | 1 |
| familia | neritopsidae | 2 |
| familia | neritidae | 23 |
| familia | phenacolepadidae | 5 |
| familia | titiscaniidae | 1 |
| familia | rissoidae | 166 |
| familia | adeorbidae | 10 |
| familia | barleeidae | 62 |
| familia | anabathridae | 6 |
| familia | caecidae | 57 |
| familia | elachisinidae | 1 |
| familia | assimineidae | 4 |
| familia | vitrinellidae | 81 |
| familia | tornidae | 26 |
| familia | rastodentidae | 2 |
| familia | cerithiidae | 54 |
| familia | planaxidae | 6 |
| familia | modulidae | 5 |
| familia | litiopidae | 8 |
| familia | diastomatidae | 13 |
| familia | obtortionidae | 9 |
| familia | batillariidae | 3 |
| familia | turritellidae | 32 |
| familia | vermetidae | 25 |
| familia | littorinidae | 29 |
| familia | lacunidae | 6 |
| familia | skeneopsidae | 1 |
| familia | aporrhaiidae | 3 |
| familia | strombidae | 18 |
| familia | hipponicidae | 14 |
| familia | vanikoridae | 4 |
| familia | fossaridae | 19 |
| familia | calyptraeidae | 39 |
| familia | capulidae | 19 |
| familia | xenophoridae | 1 |
| familia | lamellariidae | 14 |
| familia | velutinidae | 5 |
| familia | cypraeidae | 6 |
| familia | triviidae | 17 |
| familia | eratoidae | 7 |
| familia | ovulidae | 20 |
| familia | pediculariidae | 2 |
| familia | naticidae | 73 |
| familia | tonnidae | 4 |
| familia | ficidae | 4 |
| familia | cassidae | 15 |
| familia | ranellidae | 23 |
| familia | personidae | 5 |
| familia | bursidae | 9 |
| familia | atlantidae | 6 |
| familia | carinariidae | 7 |
| familia | cerithiopsidae | 92 |
| familia | triforidae | 2 |
| familia | triphoridae | 72 |
| familia | epitoniidae | 160 |
| familia | janthinidae | 4 |
| familia | eulimidae | 132 |
| familia | stiliferidae | 6 |
| familia | entoconchidae | 1 |
| familia | thycidae | 1 |
| familia | aclididae | 35 |
| familia | muricidae | 203 |
| familia | coralliophilidae | 1 |
| familia | buccinidae | 179 |
| familia | columbellidae | 219 |
| familia | nassariidae | 52 |
| familia | melongenidae | 19 |
| familia | fasciolariidae | 88 |
| familia | volutidae | 6 |
| familia | harpidae | 5 |
| familia | turbinellidae | 13 |
| familia | olividae | 81 |
| familia | cystiscidae | 10 |
| familia | marginellidae | 5 |
| familia | mitridae | 58 |
| familia | volutomitridae | 3 |
| familia | costellariidae | 22 |
| familia | cancellariidae | 56 |
| familia | drilliidae | 109 |
| familia | pseudomelatomidae | 10 |
| familia | turridae | 494 |
| familia | conidae | 62 |
| familia | terebridae | 86 |
| familia | rissoellidae | 12 |
| familia | omalogyridae | 2 |
| familia | architectonicidae | 14 |
| familia | mathildidae | 12 |
| familia | pyramidellidae | 617 |
| familia | amathinidae | 7 |
| familia | ebalidae | 2 |
| familia | orbitestellidae | 1 |
| familia | acteonidae | 24 |
| familia | ringiculidae | 3 |
| familia | hydatinidae | 1 |
| familia | cylichnidae | 41 |
| familia | philinidae | 11 |
| familia | aglajidae | 11 |
| familia | gastropteridae | 1 |
| familia | diaphanidae | 4 |
| familia | haminoeidae | 18 |
| familia | bullidae | 7 |
| familia | retusidae | 12 |
| familia | microhedylidae | 1 |
| familia | cylindrobullidae | 1 |
| familia | volvatellidae | 1 |
| familia | juliidae | 6 |
| familia | oxynoidae | 3 |
| familia | akeridae | 2 |
| familia | aplysiidae | 18 |
| familia | dolabriferidae | 4 |
| familia | notarchidae | 2 |
| familia | umbraculidae | 2 |
| familia | tylodinidae | 3 |
| familia | cavoliniidae | 6 |
| familia | peraclidae | 1 |
| familia | cymbuliidae | 2 |
| familia | desmopteridae | 1 |
| familia | onchidiidae | 8 |
| familia | veronicellidae | 4 |
| familia | ellobiidae | 31 |
| familia | trimusculidae | 5 |
| familia | siphonariidae | 11 |
| CLASSIS CEPHALOPODA | | |
| familia | gastrodontidae | 2 |
| CLASSIS BIVALVIA | | |
| familia | argonautidae | 2 |
| familia | solemyidae | 8 |
| familia | nucinellidae | 3 |
| familia | nuculidae | 30 |
| familia | pristiglomidae | 2 |
| familia | tindariidae | 19 |
| familia | nuculanidae | 68 |
| familia | spinulidae | 1 |
| familia | yoldiidae | 32 |
| familia | malletiidae | 14 |
| familia | neilonellidae | 8 |
| familia | arcidae | 45 |
| familia | noetiidae | 8 |
| familia | limopsidae | 16 |
| familia | glycymerididae | 16 |
| familia | phylobryidae | 5 |
| familia | mytilidae | 85 |
| familia | pteriidae | 6 |
| familia | malleidae | 3 |
| familia | isognomonidae | 7 |
| familia | pinnidae | 9 |
| familia | limidae | 22 |
| familia | ostreidae | 16 |
| familia | gryphaeidae | 2 |
| familia | plicatulidae | 5 |
| familia | dimyidae | 3 |
| familia | pectinidae | 71 |
| familia | propeamussiidae | 7 |
| familia | spondylidae | 9 |
| familia | anomiidae | 9 |
| familia | placunidae | 4 |
| familia | trigoniidae | 5 |
| familia | lucinidae | 56 |
| familia | thyasiridae | 15 |
| familia | ungulinidae | 18 |
| familia | cyrenoididae | 3 |
| familia | galeommatidae | 9 |
| familia | kelliidae | 18 |
| familia | lasaeidae | 9 |
| familia | leptonidae | 4 |
| familia | montacutidae | 37 |
| familia | sportellidae | 10 |
| familia | bernardinidae | 4 |
| familia | carditidae | 32 |
| familia | condylocardiidae | 4 |
| familia | chamidae | 24 |
| familia | crassatellidae | 8 |
| familia | astartidae | 13 |
| familia | cardiniidae | 1 |
| familia | cardiidae | 35 |
| familia | mactridae | 37 |
| familia | mesodesmatidae | 9 |
| familia | solenidae | 9 |
| familia | cultellidae | 3 |
| familia | tellinidae | 161 |
| familia | semelidae | 55 |
| familia | psammobiidae | 19 |
| familia | solecurtidae | 18 |
| familia | pharidae | 5 |
| familia | donacidae | 25 |
| familia | glossidae | 1 |
| familia | kelliellidae | 2 |
| familia | trapeziidae | 2 |
| familia | vesicomyidae | 18 |
| familia | veneridae | 173 |
| familia | cooperellidae | 2 |
| familia | petricolidae | 12 |
| familia | myidae | 10 |
| familia | corbulidae | 26 |
| familia | spheniopsidae | 2 |
| familia | gastrochaenidae | 4 |
| familia | hiatellidae | 10 |
| familia | pholadidae | 25 |
| familia | xylophagaidae | 13 |
| familia | teredinidae | 22 |
| familia | parilimyidae | 1 |
| familia | thraciidae | 18 |
| familia | periplomatidae | 16 |
| familia | lyonsiidae | 15 |
| familia | pandoridae | 18 |
| familia | myochamidae | 1 |
| familia | poromyidae | 16 |
| familia | cuspidariidae | 45 |
| CLASSIS SCAPHOPODA | | |
| familia | verticordiidae | 17 |
| familia | dentaliidae | 33 |
| familia | entalinidae | 1 |
| errors | n. | 0 |