Article (Scientific journals)
Palaeogeographical and palaeoecological constraints on palaeozoic vertebrates (chondrichthyans and placoderms) in the Ardenne Massif - Shark radiations in the Famennian on both sides of the Paleotethys
Derycke, Claire; Olive, Sébastien; Groessens, Eric et al.
2014In Palaeogeography, Palaeoclimatology, Palaeoecology, 414, p. 61-67
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Keywords :
chondrichthyans; Famennian; palaeogeography; Ardenne; Variscan sea
Abstract :
[en] Three chondrichthyan radiations are registered in the Famennian of the ArdenneMassif (Belgium). These radiations are already observed in Morocco and in the Carnic Alps, their acme being related with the early expansa transgression. Comparisons of univariate statistical descriptors like Margalef richness and Shannon–Wiener diversity index show variations between both margins of the Paleotethys, variations interpreted in terms of trophic relationships. The Ardenne area, a northern shallow carbonate platform is characterized during the Famennian by endemic shark taxa with durophagous dentition. The southern open deep-sea area, the Variscan Sea, contains large placoderms probably disclosing a negative feedback on “cladodont” chondrichthyans. This supports the hypothesis that the Armorica platelet behaved like a barrier between the central southern Laurussia and northern Gondwana.
Disciplines :
Zoology
Earth sciences & physical geography
Author, co-author :
Derycke, Claire;  Université des Sciences et Technologies de Lille - USTL
Olive, Sébastien ;  Université de Liège - ULiège > Form. doct. sc. (géologie - Bologne)
Groessens, Eric;  Institut Royal des Sciences Naturelles de Belgique
Goujet, Daniel;  Muséum National d'Histoire Naturelle (Paris, France)
Language :
English
Title :
Palaeogeographical and palaeoecological constraints on palaeozoic vertebrates (chondrichthyans and placoderms) in the Ardenne Massif - Shark radiations in the Famennian on both sides of the Paleotethys
Publication date :
2014
Journal title :
Palaeogeography, Palaeoclimatology, Palaeoecology
ISSN :
0031-0182
eISSN :
1872-616X
Publisher :
Elsevier Science, Amsterdam, Netherlands
Volume :
414
Pages :
61-67
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 30 July 2014

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