Odontode

Odontodes, or dermal teeth, are hard structures found on the external surfaces of animals or near internal openings. They consist of a soft pulp surrounded by dentine and covered by a mineralized substance such as enamel, a structure similar to that of teeth.[1] They generally do not have the same function as teeth, and are not replaced the same way teeth are in most fish.[2] In some animals (notably catfish), the presence or size of odontodes can be used in determining the sex.[3]

"Odontodes" redirects here. For the genus of moth, see Odontodes (moth).

The name comes from the Greek "odon" meaning tooth.

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.

gollark: Not so risky that you could lose an *unknowable* amount of money.
gollark: Which probably means high premiums, which means people won't buy it and then complain when something bad happens.
gollark: Pandemic insurance which didn't run on the government strategy of "just borrow tons of money and hope it doesn't break things" would need lots of money saved.
gollark: Same here with "national insurance", allegedly, but it just goes into the main government moneypile.
gollark: They give you money if you're unemployed *maybe* subject to some preconditions because government, and you *maybe* pay taxes (here, people below a certain income don't).

See also
  • Dermal denticle

References
  1. "Paleos Vertebrates: Glossary". Archived from the original on 2006-06-22. Retrieved 2006-05-21.
  2. "Evolution of development of the vertebrate dermal and oral skeletons: Unraveling concepts, regulatory theories, and homologies". Paleobiology. 2002.
  3. "Sexual Dimorphism of the "Zebra Pleco" Hypancistrus zebra". Archived from the original on 2006-05-16. Retrieved 2006-05-22.
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.