| Spongioradsia Temporal range: | |
|---|---|
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Polyplacophora |
| Subclass: | Neoloricata |
| Order: | Chitonida |
| Family: | Tonicellidae |
| Genus: | Spongioradsia Pilsbry, 1894 |
| Type species | |
| Trachydermon (Trachyradsia) aleuticaDall, 1878 | |
| Synonyms | |
Trachydermon (Spongioradsia)Pilsbry, 1894 (original rank) Contents | |
Spongioradsia is a genus of polyplacophoran molluscs. Spongioradsia became extinct during the Oligocene period. [1] [2]
Chitons are marine molluscs of varying size in the class Polyplacophora, formerly known as Amphineura. About 940 extant and 430 fossil species are recognized.
Euhadra is a genus of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the subfamily Bradybaeninae of the family Camaenidae.
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.
Littoridina is a genus of small freshwater snails with a gill and an operculum, aquatic gastropod mollusks in the family Cochliopidae.
Nesopupa is a genus of very small air-breathing land snails, terrestrial pulmonate gastropod mollusks in the subfamily Nesopupinae of the family Vertiginidae.
Subulina is a genus of small tropical air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Achatinidae.
Ischnochiton is a genus of polyplacophoran mollusc.
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.
Polinices is a genus of predatory sea snails, marine gastropod molluscs in the subfamily Polinicinae of the family Naticidae, commonly known as moon snails.
Punctum is a genus of very small air-breathing land snails, terrestrial pulmonate gastropod mollusks or micromollusks in the subfamily Punctinae of the family Punctidae, the dot snails.
Chitonida is an order of chitons. The order was erected to class chitons with elaborate hull outgrowths on their eggs.
Carinodrillia is a genus of sea snails, marine gastropod mollusks in the family Pseudomelatomidae, the turrids and allies.
Ischnochitonidae is a family of polyplacophoran mollusc belonging to the superfamily Chitonoidea.
Stenoplax is a genus of polyplacophoran molluscs in the family Ischnochitonidae.
Tonicia is a genus of chitons in the subfamily Toniciinae of the family Chitonidae.
Cyclostremiscus is a genus of small sea snails in the family Tornidae.
Lepidozona is a genus of chitons belonging to the family Ischnochitonidae.
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