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| one publication added to basket [246841] |
Paleogeographical and paleoecological constraints on paleozoic vertebrates (chondrichthyans and placoderms) in the Ardenne Massif: shark radiations in the Famennian on both sides of the Palaeotethys
Derycke, C; Olive, S.; Groessens, E.; Goujet, D (2014). Paleogeographical and paleoecological constraints on paleozoic vertebrates (chondrichthyans and placoderms) in the Ardenne Massif: shark radiations in the Famennian on both sides of the Palaeotethys. Palaeogeogr. Palaeoclimatol. Palaeoecol. 414: 61-67. dx.doi.org/10.1016/j.palaeo.2014.07.012
In: Palaeogeography, Palaeoclimatology, Palaeoecology. Elsevier: Amsterdam; Tokyo; Oxford; New York. ISSN 0031-0182; e-ISSN 1872-616X
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| Trefwoorden |
Chondrichthyes [WoRMS]
Marien/Kust |
| Author keywords |
Chondrichthyans; FAMENNIAN; Paleogeography; Ardenne; Variscan Sea |
| Auteurs | | Top |
- Derycke, C
- Olive, S.
- Groessens, E.
- Goujet, D
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| Abstract |
Three chondrichthyan radiations are registered in the Famennian of the Ardenne Massif (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. Published by Elsevier B.V. |
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