Cryptodonta
Cryptodonta | |
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Panenka bohemica () from Czech Republic, at the National Museum (Prague) | |
Scientific classification | |
Kingdom: | Animalia
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Phylum: | |
Class: | |
Subclass: | Cryptodonta Neumayr, 1884
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Orders | |
The Cryptodonta are a nearly-extinct subclass of the bivalves. It contains a single extant order, Solemyida, while the Praecardiida are known only from fossils.
The valves of the shell are relatively thin and somewhat elongated. Unlike most other bivalves, species in this group have no hinge teeth on their shells. They have relatively primitive, "protobranchiate", gills.[1]
Taxonomy[]
- Cryptodonta
- Order †Praecardiida
- Family †
- Genus †
- Family †
- Genus †
- Genus †Cardiola
- Family †
- Genus †
- Genus †Hercynella
- Genus †Panenka
- Family †
- Order Solemyida
- Superfamily
- Family Solemyidae (Awning clams)
- Genus
- Genus Solemya
- Family Manzanellidae
- Genus
- Genus
- Family Nucinellidae
- Genus Huxleyia
- Genus
- Family Solemyidae (Awning clams)
- Order †Praecardiida
References[]
- ^ Barnes, Robert D. (1982). Invertebrate Zoology. Philadelphia, PA: Holt-Saunders International. p. 430. ISBN 0-03-056747-5.
Categories:
- Bivalve taxonomy
- Mollusc subclasses
- Obsolete animal taxa
- Bivalve stubs