| Chitonidae | |
|---|---|
 | |
| Chiton magnificus | |
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Polyplacophora |
| Order: | Chitonida |
| Suborder: | Chitonina |
| Family: | Chitonidae Rafinesque, 1815 |
| Genera | |
16, 15 extant, see text | |
Chitonidae is a family of chitons or polyplacophorans, marine mollusks whose shell is composed of eight articulating plates or valves. There are fifteen extant genera in three subfamilies.
Subfamilies and genera within the family Chitonidae include:
Chitons are marine molluscs of varying size in the class Polyplacophora, formerly known as Amphineura. About 940 extant and 430 fossil species are recognized.
Stylommatophora is an order of air-breathing land snails and slugs, terrestrial pulmonate gastropod molluscs. This taxon includes most land snails and slugs. Stylommatophorans lack an operculum, but some close their shell apertures with temporary "operculum" (epiphragm) made of calcified mucus. They have two pairs of rectractile tentacles, of which the upper pair bears eyes on the tentacle tips. All stylommatophorans are hermaphrodites.
Volutidae, common name volutes, are a taxonomic family of predatory sea snails that range in size from 9 mm to over 500 mm. They are marine gastropod mollusks. Most of the species have no operculum.
Calliostomatidae is a family of sea snails within the superfamily Trochoidea and the clade Vetigastropoda.
Fissurellidae, common name the keyhole limpets and slit limpets, is a taxonomic family of limpet-like sea snails, marine gastropod molluscs in the clade Vetigastropoda. Their common name derives from the small hole in the apex of their cone-like shells. Although superficially resembling "true" limpets, they are in fact not closely related to them.
Chiton is a genus of chitons, a polyplacophoran mollusk in the family Chitonidae.
Rhyssoplax is a genus of chitons in the family Chitonidae, endemic to Australia, New Zealand, New Caledonia, Norfolk Island, and the Kermadec Islands.
Charopidae is a taxonomic family of small air-breathing land snails, terrestrial pulmonate gastropod mollusks in the superfamily Punctoidea.
Camaenidae is a family of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the superfamily Helicoidea, the typical snails and their allies. This is one of the most diverse families in the clade Stylommatophora.
The Nassariidae, Nassa mud snails (USA), or dog whelks (UK), are a taxonomic family of small to medium-sized sea snails, marine gastropod mollusks in the clade Neogastropoda.
Ischnochiton is a genus of polyplacophoran mollusc.
Plaxiphora is a genus of chitons in the family Mopaliidae. It is distributed in the Atlantic, Indian, and Pacific Oceans, primarily in the south-temperate and subantarctic regions.
Onithochiton is a genus of chitons in the subfamily Toniciinae of the family Chitonidae, which is distributed from Australia and New Zealand to South Africa.
Notoplax is a genus of chitons in the family Acanthochitonidae.
Craspedochiton is a genus of chitons in the family Acanthochitonidae, endemic to New Zealand, the Philippines and Australia.
Mangeliidae is a monophyletic family of small to medium-sized, predatory sea snails, marine gastropod mollusks in the superfamily Conoidea.
The subfamily Emarginulinae, common name keyhole limpets and slit limpets, is a taxonomic subfamily of limpet-like sea snails, marine gastropod molluscs in the family Fissurellidae, the keyhole limpets and slit limpets.
Ischnochitonidae is a family of polyplacophoran mollusc belonging to the superfamily Chitonoidea.
Mopaliidae is a family of marine molluscs in the class Polyplacophora.
Tonicia is a genus of chitons in the subfamily Toniciinae of the family Chitonidae.
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