Definition of Term

pharyngeal teeth

(English) Opposing patches of teeth which occur on the upper and lower elements of the gill arches. May be placed in a dorsal and ventral pair, as in most teleost fishes, or in laterally opposing pairs, one set on each side, as in Cyprinidae and Catostomidae. The upper pharyngeal teeth are located on a dentigerous plate on the fourth pharyngobranchials and the lower pharyngeal teeth on the dentigerous plate on the fifth ceratobranchials. The pharyngeal teeth of minnows and suckers are processes on the dentigerous plate of the fifth ceratobranchials and are thus homologous to the lower pharyngeal teeth of other fishes; these oppose a prominent horny pad which rests on a projection from the basioccipital. The pharyngeal teeth vary from sharp and piercing to nodular or molariform; they may be modified into a grooved grinding apparatus (or pharyngeal mill), such as seen in the parrotfishes. (See also: molar, pharynx)

dents pharyngiennes

(French) Plaques dentaires opposées présentes sur les branches supérieures et inférieures des arcs branchiaux. Ces dents peuvent être tranchantes et perçantes, nodulaires ou molaires ; elles peuvent être modifiées en un moulin broyeur comme chez les perroquets. (See also: molar, pharynx)

dentes faríngicos

(Portuguese) Zonas de dentes que ocorrem nos elementos inferiores e superiores dos arcos branquiais. Podem ser afiados e ponteagudos ou nodulares e molariformes. (See also: molar, pharynx)

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