Odontode

Encyclopedia : O : OD : ODO : Odontode

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Odontodes, or dermal teeth, are hard structures found on the external surfaces of animals or near internal openings. They are comprised of a soft pulp surrounded by dentine and covered by a mineralized substance such as enamel, a structure similar to that of teeth. They generally do not have the same function as teeth, and are not replaced the same way teeth are in most fishes. In some animals (notably catfish) the presence or size of odontodes can be used in determining the sex..

See also Dermal denticle

Images

[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.

References

 

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