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Cryptodonta

Cryptodonta

A Dictionary of Zoology | 1999 | | Copyright

Cryptodonta (phylum Mollusca, class Bivalvia) A subclass of bivalves most of which have thin, equivalve shells composed of aragonite. They have an amphidetic to opisthodetic external ligament. The hinge plate is narrow or absent, with most forms having an edentulous hinge margin; some members are taxodont. They have an infaunal mode of life. They first appeared in the Ordovician.
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MICHAEL ALLABY. "Cryptodonta." A Dictionary of Zoology. 1999. Encyclopedia.com. 31 May. 2012 <http://www.encyclopedia.com>.

MICHAEL ALLABY. "Cryptodonta." A Dictionary of Zoology. 1999. Encyclopedia.com. (May 31, 2012). http://www.encyclopedia.com/doc/1O8-Cryptodonta.html

MICHAEL ALLABY. "Cryptodonta." A Dictionary of Zoology. 1999. Retrieved May 31, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O8-Cryptodonta.html

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Cryptodonta

A Dictionary of Earth Sciences | 1999 | | Copyright

Cryptodonta (phylum Mollusca, class Bivalvia) Subclass of bivalves most of which have thin, equivalve shells composed of aragonite. They have an amphidetic to opisthodetic external ligament. The hinge plate is narrow or absent, with most forms having a toothless hinge margin; some members are taxodont. They have an infaunal mode of life. They first appeared in the Ordovician.
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AILSA ALLABY and MICHAEL ALLABY. "Cryptodonta." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. 31 May. 2012 <http://www.encyclopedia.com>.

AILSA ALLABY and MICHAEL ALLABY. "Cryptodonta." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. (May 31, 2012). http://www.encyclopedia.com/doc/1O13-Cryptodonta.html

AILSA ALLABY and MICHAEL ALLABY. "Cryptodonta." A Dictionary of Earth Sciences. 1999. Retrieved May 31, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O13-Cryptodonta.html

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