| 词条 | Cryptodonta |
| 释义 |
| name = Cryptodonta |image = Antipleuridae - Panenka bohemica.JPG |image_caption = Panenka bohemica (Antipleuridae) from Czech Republic, at the National Museum (Prague) | regnum = Animalia | phylum = Mollusca | classis = Bivalvia | subclassis = Cryptodonta | subclassis_authority = Neumayr, 1884 | subdivision_ranks = Orders | subdivision =
}} 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
References1. ^{{cite book |author= Barnes, Robert D. |year=1982 |title= Invertebrate Zoology |publisher= Holt-Saunders International |location= Philadelphia, PA|page= 430|isbn= 0-03-056747-5}} {{Taxonbar|from=Q661048}}{{bivalve-stub}} 3 : Bivalve taxonomy|Mollusc subclasses|Obsolete animal taxa |
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