Assessing the composition of fragmented agglutinated foraminiferal assemblages in ancient sediments: comparison of counting and area-based methods in Famennian samples (Late Devonian)
Institut des Sciences de l'Evolution, Université de Montpellier,
UMR5554 CNRS, IRD, EPHE, Place Eugène Bataillon, CC65, 34095 Montpellier
cedex, France
Anne-Béatrice Dufour
Laboratoire de Biométrie et Biologie Evolutive, UMR5558,
Université de Lyon, Université Lyon 1, CNRS, 69100 Villeurbanne,
France
Anne-Lise Charruault
Institut des Sciences de l'Evolution, Université de Montpellier,
UMR5554 CNRS, IRD, EPHE, Place Eugène Bataillon, CC65, 34095 Montpellier
cedex, France
Sabrina Renaud
Laboratoire de Biométrie et Biologie Evolutive, UMR5558,
Université de Lyon, Université Lyon 1, CNRS, 69100 Villeurbanne,
France
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This study constitutes an attempt to analyze the variations in foraminiferal assemblages using the morphogroup approach in the Late Devonian. Our results show that both methods of estimating morphotype percentages, the traditional counting and the cumulated area methods, provide similar results, are highly correlated with each other, and provide similar relationships with paleoenvironmental proxies.
This study constitutes an attempt to analyze the variations in foraminiferal assemblages using...
