Morphological Studies on the Mouth Cavity of Urodeles

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Abstract
Adults of the neotenic (paedomorph) N. maculosus possess in the upper jaw and the palate rather uniform, conical, monocuspid teeth arranged in a single line ("Zahnzeile"; monostichous pattern) and showing a broad dividing zone, which separates the pedicel and the distal crown. This zone consists of globular and fibrous material obviously mineralized. Both premaxillaries are provided with teeth by 1 continuous dental lamina; the vomer and palatopterygoid are accompanied by 2 dental laminae on each side of the palate. The results are compared to the conditions observed in other larval, neotenic and metamorphosed Urodela.