Zoology: Invertebrates

A Dictionary of Earth Sciences A Dictionary of Zoology Further reading

Opisthobranchia

A Dictionary of Earth Sciences | 1999 | | Copyright

Opisthobranchia (phylum Mollusca, class Gastropoda) Subclass of marine organisms, which are often ‘naked’, that includes the sea slugs and pteropods, and ranges from the Cretaceous to the present day. They have only one gill and are thought to represent an evolutionary grade between the prosobranch (single-gilled) gastropods and the pulmonate gastropods (i.e. gastropods in which the mantle cavity functions as a lung).

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AILSA ALLABY and MICHAEL ALLABY. "Opisthobranchia." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. 30 May. 2012 <http://www.encyclopedia.com>.

AILSA ALLABY and MICHAEL ALLABY. "Opisthobranchia." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. (May 30, 2012). http://www.encyclopedia.com/doc/1O13-Opisthobranchia.html

AILSA ALLABY and MICHAEL ALLABY. "Opisthobranchia." A Dictionary of Earth Sciences. 1999. Retrieved May 30, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O13-Opisthobranchia.html

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Opisthobranchia

A Dictionary of Zoology | 1999 | | Copyright

Opisthobranchia (phylum Mollusca, class Gastropoda) A subclass of marine organisms, which are often ‘naked’, including the sea slugs and pteropods, ranging from the Cretaceous to the present day. They have only one gill and are thought to represent an evolutionary grade between the prosobranch gastropods (Prosobranchia) and the pulmonate gastropods (Pulmonata).

Cite this article
Pick a style below, and copy the text for your bibliography.

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MICHAEL ALLABY. "Opisthobranchia." A Dictionary of Zoology. 1999. Encyclopedia.com. 30 May. 2012 <http://www.encyclopedia.com>.

MICHAEL ALLABY. "Opisthobranchia." A Dictionary of Zoology. 1999. Encyclopedia.com. (May 30, 2012). http://www.encyclopedia.com/doc/1O8-Opisthobranchia.html

MICHAEL ALLABY. "Opisthobranchia." A Dictionary of Zoology. 1999. Retrieved May 30, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O8-Opisthobranchia.html

Learn more about citation styles

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