Title
Quantitative analysis of Elasmobranch assemblages from two successive Ypresian (early Eocene) facies at Marke, western Belgium Quantitative analysis of Elasmobranch assemblages from two successive Ypresian (early Eocene) facies at Marke, western Belgium
Author
Faculty/Department
Faculty of Sciences. Biology
Publication type
article
Publication
Bruxelles : Geologica Belgica ,
Subject
Physics
Source (journal)
Geologica Belgica. - Bruxelles : Geologica Belgica, 1998
Volume/pages
15(2012) :3 , p. 147-155
ISSN
1374-8505
ISI
000310714300005
Carrier
E
Target language
English (eng)
Affiliation
University of Antwerp
Abstract
Temporal patterns in biodiversity are affected largely by changes in environmental conditions. Sea level fluctuations rank amongst the major factors that affect marine biodiversity or community structure on a local or regional scale, as confirmed by numerous case studies relating lithology with fossil assemblages in order to reconstruct palaeoenvironmental conditions. However up to now, few studies quantified selachian and batoid faunas (Elasmobranchii) in such a context. In the present study, we compare elasmobranch teeth from two successive facies of Ypresian (Early Eocene) age, as exposed at the Marke clay pit in the southern part of the Belgian Basin. We present a significant link between the difference in lithology of these levels and elasmobranch community structure. In general, selachians are notably more common in clayey levels, while batoids predominate in sandy levels. Following the principle of uniformitarianism, such a link indicates that the recognised patterns in elasmobranch diversity depend mainly on the preferred sea level and/or habitat requirements by a species or a species group, in analogy to what is seen in modern communities. Additional notes on the palaeocnvironment are presented, as well as a list of 36 elasmobranch taxa from Marke, including a number of new recorded taxa for the Ypresian of Belgium.
Full text (open access)
https://repository.uantwerpen.be/docman/irua/a70551/3623.pdf
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