| Chitonida | |
|---|---|
 | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Polyplacophora |
| Subclass: | Neoloricata |
| Order: | Chitonida Thiele, 1910 |
| Families | |
See text | |
Chitonida is an order of chitons. [1] The order was erected to class chitons with elaborate hull outgrowths on their eggs. [2] [3]
Chitons are marine molluscs of varying size in the class Polyplacophora, formerly known as Amphineura. About 940 extant and 430 fossil species are recognized.
Orthogastropoda was a major taxonomic grouping of snails and slugs, an extremely large subclass within the huge class Gastropoda according to the older taxonomy of the Gastropoda.
Chrysallidinae is a taxonomic group of very small sea snails, marine gastropod mollusk in the family Pyramidellidae, the pyrams and their allies.
Neritoidea is a taxonomic superfamily of mostly sea snails, nerites and their allies, marine gastropod mollusks in the order Cycloneritida.
Mitridae, known as mitre shells, are a taxonomic family of sea snails, widely distributed marine gastropod molluscs in the clade Mitroidea.
Ischnochiton is a genus of polyplacophoran mollusc.
Acanthochitona is a genus of chitons in the family Acanthochitonidae, of worldwide distribution.
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.
Turbinellidae are a family of sea snails, marine gastropod mollusks in the clade Neogastropoda. Members of this family are predators.
Cymatiidae is a family of large sea snails in the superfamily Tonnoidea and the order Littorinimorpha. Members of this family are predators.
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.
The taxonomy of the Gastropoda, as revised by Winston Ponder and David R. Lindberg in 1997, is an older taxonomy of the class Gastropoda, the class of molluscs consisting of all snails and slugs. The full name of the work in which this taxonomy was published is Towards a phylogeny of gastropod molluscs: an analysis using morphological characters.
Apogastropoda was previously used as a major taxonomic grouping of sea snails, marine gastropod molluscs. This infraclass mostly consisted of marine limpets and operculate snails. At least 20,000 species were considered to exist within the two clades that were included, Heterobranchia and Caenogastropoda.
Winston Frank Ponder is a malacologist born and educated in New Zealand who has named and described many marine and freshwater animals, especially micromolluscs.
Seguenzioidea is a superfamily of minute to medium-sized sea snails, marine gastropod mollusks in the clade Vetigastropoda.
Ischnochitonidae is a family of polyplacophoran mollusc belonging to the superfamily Chitonoidea.
Septemchitonidae is an extinct family of chitons (Polyplacophora) known from Europe and North America. Morphologically, the clade is defined by rectangular plates, and the upside-down V-shape of species' valves when viewed in cross-section.
Trochida is an order of small to very large vetigastropod, Recent and extinct sea snails with gills and an operculum.
Callistoplacidae is a family of chitons belonging to the order Chitonida.
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