Selected benthic faunas from the Devonian of the Ardennes: an estimation of palaeobiodiversity

A survey of the principal benthic faunas from the Devonian of the Ardennes is presented. The alpha-diversity is very high ( 707 species, including 138 species of stromatoporoids, 113 species of tabulates, hydroids and chaetetids, and 456 species of brachiopods). Analysis of their distribution through time indicates two brachiopod diversity peaks ( Emsian/Eifelian and Frasnian), a single stromatoporoid diversity peak ( Givetian), and no clear peak of tabulate corals ( with the highest diversification during the Eifelian - Frasnian). The highest diversity of bioconstructors in the Givetian corre... Mehr ...

Verfasser: Hubert, B.L.M.
Zapalski, M.K.
Nicollin, J.-P.
Mistiaen, B.
Brice, D.
Dokumenttyp: Artikel
Erscheinungsdatum: 2007
Schlagwörter: Devonian / Brachiopoda [Lamp shells] / Chaetetidae / Porifera [Sponges] / Stromatoporoidea / Tabulata / Belgium / Ardenne
Sprache: Englisch
Permalink: https://search.fid-benelux.de/Record/base-28933911
Datenquelle: BASE; Originalkatalog
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Link(s) : https://www.vliz.be/imisdocs/publications/320280.pdf

A survey of the principal benthic faunas from the Devonian of the Ardennes is presented. The alpha-diversity is very high ( 707 species, including 138 species of stromatoporoids, 113 species of tabulates, hydroids and chaetetids, and 456 species of brachiopods). Analysis of their distribution through time indicates two brachiopod diversity peaks ( Emsian/Eifelian and Frasnian), a single stromatoporoid diversity peak ( Givetian), and no clear peak of tabulate corals ( with the highest diversification during the Eifelian - Frasnian). The highest diversity of bioconstructors in the Givetian correlates with a decrease in brachiopod diversity. Changes in the vertical distribution of the faunas are correlated with the facies development: the development of carbonates correlates with the abundance of stromatoporoids and tabulates, while brachiopods were most abundant before and after the peak of carbonate development. Bioconstructors are absent ( or nearly absent) in siliciclastic facies.