Morphological studies on the mouth cavity of Urodela IX. Teeth of the palate and the splenials in Siren and Pseudobranchus (Sirenidae: Amphibia)
2009; Wiley; Volume: 26; Issue: 2 Linguagem: Inglês
10.1111/j.1439-0469.1988.tb00305.x
ISSN1439-0469
AutoresGünter Clemen, Hartmut Greven,
Tópico(s)Amphibian and Reptile Biology
Resumo1. Dentition, tooth structure and course of dental laminae of adult and subadult Sirenidae (Siren intermedia, S. lacertina, Pseudobranchus striatus) have been studied by light microscopy and scanning electron microscopy. 2. Splenials, vomers und palatines bear monocuspid unbladed teeth, arranged in a polystichous pattern, whereas praemaxillaries and maxillaries (so far as present) are edentate. Teeth in S. intermedia show a rough basis, which is more prominent in S. lacertina and which has break-throughs in P. striatus. This zone perhaps is homologous to a developing dividing zone typical for teeth in many “Lissamphibia”. 3. With respect to structure and organisation of dentigerous bones and teeth Sirenidae obviously possess a mosaicism of differently developed larval characters in their mouth cavity. 4. The dentition in the recent forms investigated is compared to that of other paedomorphic Urodela und the ancient Habrosaurus dilatus (Sirenidae).
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