Cryptodonta
| Cryptodonta | |
|---|---|
 | |
| Panenka bohemica (Antipleuridae) from Czech Republic, at the National Museum (Prague) | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Bivalvia |
| Subclass: | Cryptodonta Neumayr, 1884 |
| Orders | |
The Cryptodonta are a nearly-extinct subclass of the bivalves. It contains a single extant order, Solemyoida, while the Praecardioida 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 †Praecardioida
- Family †Butovicellidae
- Genus †Butovicella
- Family †Praecardiidae
- Genus †Slava
- Genus †Cardiola
- Family †Antipleuridae
- Genus †Dualina
- Genus †Hercynella
- Genus †Panenka (genus)
- Family †Butovicellidae
- Order Solemyoida
- Superfamily Solemyoidea
- Family Solemyidae (Awning clams)
- Genus Acharax
- Genus Solemya
- Family Manzanellidae
- Genus Manzanella
- Genus Posterodonta
- Family Nucinellidae
- Genus Huxleyia
- Genus Nucinella
- Family Solemyidae (Awning clams)
- Order †Praecardioida
References
This article is issued from Wikipedia - version of the 11/9/2015. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.