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

Number of Orders: 99

Number of Families: 1694

Number of Genus: 16,018

Number of known Species: 136,462

Earliest Fossil Record: Cambrian 541 - 485 mya

Habitat: Marine, Terrestrial, Freshwater, Brackish

Size Range: 0.4 mm to 14 m

Notes: Two extinct classes not included. Based on Catalogue of Life as of July 2024