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zonule
zonule Subdivision of a subzone based essentially on the presence of a given species. Several zonules are recognized, for example, in the Upper Cambrian Franconia Sandstone of Minnesota. Here the zone was recognized by the presence of the trilobites (Trilobita) Ptychaspis and Prosaukia, the subzone by Prosaukia, and zonules by Prosaukia striata and P. granulosa.
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Cite this article
AILSA ALLABY and MICHAEL ALLABY. "zonule." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. 12 Feb. 2012 <http://www.encyclopedia.com>. AILSA ALLABY and MICHAEL ALLABY. "zonule." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. (February 12, 2012). http://www.encyclopedia.com/doc/1O13-zonule.html AILSA ALLABY and MICHAEL ALLABY. "zonule." A Dictionary of Earth Sciences. 1999. Retrieved February 12, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O13-zonule.html |
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zonule
zonule (zonula) (zon-yool) n. (in anatomy) a small band or zone. z. of Zinn (zonula ciliaris) the suspensory ligament of the lens of the eye.
—zonular adj. |
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Cite this article
"zonule." A Dictionary of Nursing. 2008. Encyclopedia.com. 12 Feb. 2012 <http://www.encyclopedia.com>. "zonule." A Dictionary of Nursing. 2008. Encyclopedia.com. (February 12, 2012). http://www.encyclopedia.com/doc/1O62-zonule.html "zonule." A Dictionary of Nursing. 2008. Retrieved February 12, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O62-zonule.html |
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