Jaws and teeth of american cichlids (Pisces: Labroidei)

@article{Casciotta1993JawsAT,
  title={Jaws and teeth of american cichlids (Pisces: Labroidei)},
  author={Jorge Rafael Casciotta and Gloria Arratia},
  journal={Journal of Morphology},
  year={1993},
  volume={217}
}
The morphology of the upper, lower, and pharyngeal jaws is very similar among American cichlids. Common conditions are: (1) the presence of a premaxillary dentigerous arm shorter than the ascending arm (exceptions are Astronotus, Cichla, and Crenicichla semifasciata), (2) a narrow coulter area; in contrast, a broad coulter area is found in the Crenicichline Group, in certain chaetobranchines, and in Apistogramma, (3) the mandibular sensory canal exists to the skin through five or six simple… 
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