https://www.arabsciencepedia.org/w/index.php?action=history&feed=atom&title=OdontodeOdontode - تاريخ المراجعة2026-07-02T18:49:20Zتاريخ التعديل لهذه الصفحة في الويكيMediaWiki 1.43.6https://www.arabsciencepedia.org/w/index.php?title=Odontode&diff=37981&oldid=prevإدارة الموسوعة 1: مراجعة واحدة2016-11-14T04:03:12Z<p>مراجعة واحدة</p>
<p><b>صفحة جديدة</b></p><div>{{Redirect|Odontodes|the genus of moth|Odontodes (moth)}}<br />
'''Odontodes''', or dermal [[teeth]], are hard structures found on the external surfaces of animals or near internal openings. They comprise a soft pulp surrounded by [[dentine]] and covered by a mineralized substance such as [[tooth enamel|enamel]], a structure similar to that of [[tooth|teeth]].<ref>{{cite web | url = http://www.palaeos.com/Vertebrates/Lists/Glossary/GlossaryO.html | title = Paleos Vertebrates: Glossary }}</ref> They generally do not have the same function as teeth, and are not replaced the same way teeth are in most [[fish]].<ref>{{cite news | url = http://www.findarticles.com/p/articles/mi_qa4067/is_200210/ai_n9111235/pg_10 | title = Evolution of development of the vertebrate dermal and oral skeletons: Unraveling concepts, regulatory theories, and homologies | work=Paleobiology | year=2002}}</ref> In some animals (notably [[catfish]]) the presence or size of odontodes can be used in determining the sex.<ref>{{cite web | url = http://www.plecofanatics.com/forum/index.php?page=sexing_zebra_pleco| title = Sexual Dimorphism of the “Zebra Pleco” Hypancistrus zebra}}</ref><br />
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The name comes from the Greek "''odon''" meaning tooth.<br />
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==Images==<br />
[http://digitallibrary.amnh.org/dspace/bitstream/2246/2886/1/N3333.pdf A New Species of Hisonotus (Siluriformes,Loricariidae) of the Upper Rı´o Uruguay Basin] (see page 7) An article showing scanning electron microscope images of odontodes on a catfish. Author:Adriana E. Aquino, Scott A. Schaefer, Amalia M. Miquelarena. Publisher: The American Museum of Natural History.<br />
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== See also ==<br />
* [[Dermal denticle]]<br />
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==References==<br />
<references /><br />
{{biology-stub}}<br />
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[[Category:Teeth]]<br />
[[Category:Animal anatomy]]<br />
[[Category:Ichthyology]]<br />
[[Category:Loricariidae]]</div>إدارة الموسوعة 1