Original paper
Shark dentitions: Morphogenetic processes and evolution
Reif, W.-E.
Neues Jahrbuch für Geologie und Paläontologie - Abhandlungen Band 157 Heft 1-2 (1978), p. 107 - 115
13 references
published: Dec 11, 1978
DOI: 10.1127/njgpa/157/1978/107
ArtNo. ESP155015701013, Price: 29.00 €
Abstract
In the first part of the constructional morphological analysis of shark dentitions, the function of dentition and of individual teeth was studied (see SFB-Report 1970/75, p. 277 ff.). Now the analysis of morphogenetical processes is in the center of interest. In addition to a histological study of dentition-formation in shark embryos, a morphological investigation of embryonic dentition has been carried out for the first time (section II). From this a morphogenetic model has resulted, on the basis of which the striking phenomenon of “Tooth-Pattern-Reversal” can be explained (section III). For studies on the ecology and paleoecology of sharks it is very important to know the tooth-replacement rates and those factors which influence them (section I).
Keywords
Shark dentition • Morphogenetic • evolution • ecology