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Myida
Order of bivalves From Wikipedia, the free encyclopedia
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Myida (formerly Myoida) is an order of saltwater and freshwater clams, marine and freshwater bivalve molluscs in the subclass Heterodonta. The order includes such bivalves as soft-shell clams, geoducks and shipworms.
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Description
They are burrowing molluscs with well-developed siphons. The shell is relatively soft and lacks a nacreous layer. Some species have a single cardinal tooth.[1]
Superfamilies and families
Superfamilies and families within the Myida include (the use of † indicate taxa that are extinct):[2]
- Superfamily: Dreissenoidea
- Family: Dreissenidae
- Superfamily: Myoidea
- Family: Corbulidae
- Family: Myidae
- Family: †Pleurodesmatidae
- Family: †Raetomyidae
- Superfamily: Pholadoidea
- Family: Pholadidae
- Family: Teredinidae
- Family: Xylophagaidae
- Superfamily: †Pleuromyoidea
- Family: †Ceratomyidae
- Family: †Pleuromyidae
- Family: †Vacunellidae
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References
External links
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