Pharyngeal teeth are teeth in the pharyngeal arch of the throat of
Popular aquarium fish such as goldfish and loaches have these structures. Members of the Botia genus such as clown loaches are known to make distinctive clicking sounds when they grind their pharyngeal teeth. Myxocyprinus asiaticus (family Catostomidae) have a single row of pharyngeal teeth that have comb-like arrangements.[2]
The lower pharyngeal bones of cichlids also carry specialized teeth which augment their normal mandibular teeth in the breakdown of food.
The Cape Fear Shiner (family
To crunch exoskeletons the Redear sunfish (family Centrarchidae) has thick pharyngeal teeth composed of hard, movable plates in its throat.
The pharyngeal jaws of the Moray eel (family Muraenidae) possess their own set of teeth.
Molidae are said to be able to produce sound by grinding their pharyngeal teeth, which are long and claw-like.
The dentary of Sternarchogiton nattereri (family Apteronotidae) has upper and lower pharyngeal tooth plates bearing 9-11 and 7-9 teeth respectively.
In the Priapulida the mouth cone (“everted pharynx”) of a possible new species of Meiopriapulus bears pharyngeal teeth.[4]
Fossils of the Yunnanozoon and Haikouella possess pharyngeal teeth.
References
- ^ "Suckers Catostomidae", Iowa Department of Natural Resources
- ^ Myxocyprinus asiaticus, Chinese sucker fish, Filamn.ifm-Geomar.de, 2006, retrieved on: August 21, 2007
- ^ Groves, John. "Cape Fear Shiner Conservation & Research". North Carolina Zoo. http://www.nczoo.org/conservationresearch/instate_capefearshiner.cfm. Retrieved 2007-12-09.
- ^ Park JK, Rho HS, Kristensen RM, Kim W, Giribet G (Nov 2006). "First Molecular Data on the Phylum Loricifera – An Investigation into the Phylogeny of Ecdysozoa with Emphasis on the Positions of Loricifera and Priapulida". Zoolog Sci. 23 (11): 943-54. doi:. PMID 17189906.
See also
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