UID:
(DE-602)edochu_18452_28486
Format:
1 Online-Ressource (5 Seiten)
Content:
Dicentrodus possessed bicuspid teeth with a flat base and nonserrated or finely serrated, labio-lingually compressed, highly unequal cusps. Originally known from the late Visean–early Serpukhovian of Scotland (D. bicuspidatus), it is now known also to occur in the middle Visean of North America. This is the earliest occurrence of a xenacanthid yet reported from North America; its presence is based on incomplete teeth, which are easily distinguished from other xenacanthid genera. The cross-continental distribution of Dicentrodus, like that of other xenacanthid genera, can be explained by an increasing body of data that intimate that xenacanthids were euryhaline sharks and not restricted to a freshwater habitat.
Content:
Peer Reviewed
Note:
This publication is with permission of the rights owner freely accessible due to an Alliance licence and a national licence (funded by the DFG, German Research Foundation) respectively.
In:
Cambridge : Cambridge University Press, 143,4, Seiten 545-549
Language:
English
DOI:
10.1017/S0016756806002093
URN:
urn:nbn:de:kobv:11-110-18452/28486-8
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