Phylum - Mollusca
Common name: Snails, Slugs, Squids, Octopuses, Seaslugs, Clams, Chitons, Tusk Shells, etc.
Name derivation: “soft”
- Class: Bivalvia
- Class: Caudofoveata
- Class: Cephalopoda
- Class: Gastropoda
- Class: Monoplacophora
- Class: Polyplacophora
- Class: Scaphopoda
- Class: Solenogastres
- Class: Cricoconarida EXTINCT
- Class: Rostroconchia EXTINCT
Order Count: 103
Family Count: 1,781
Genus Count: 11,441
Species Count: 141,920
Earliest Fossil Record: Cambrian 541 - 485 mya
Habitat: Marine, Terrestrial, Freshwater, Brackish
Size Range: 0.4 mm to 14 m
Notes: Based on Catalogue of Life as of March 2025