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Tetrapod footprint ichno-associations from French Permian basins. Comparisons with other Euramerican ichnofaunas

By
Georges Gand
Georges Gand
1
Biogéosciences UMR 5561, Centre des Sciences de la Terre, Université de Bourgogne
6 Boulevard Gabriel, 21000 Dijon, France
georges.gand@wanadoo.fr
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;
Marc Durand
Marc Durand
2
47 rue de Lavaux
54520 Laxou, France
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Published:
January 01, 2006

Abstract

In order to take into account the studies of the European and American (USA) collections carried out by one of the authors, and of the recent nomenclatural revisions from new footprint discoveries, which have occurred during the last decade, the authors present a critical review of the French Permian palichnofauna. The distribution of the ichnospecies in the stratigraphy of the Lodève Basin, taken as a reference, is outlined. The ichno-associations are then compared with those of other French (Provence), European (Italy, Germany) and USA basins. Based on the ages of different ichnofossiliferous formations, three successive ichnofaunal units can be distinguished in the Permian of Europe. The first developed in the Cisuralian (Asselian to Kungurian). The second is found in the south of France in Kazanian to Lower Tatarian strata, equivalent to the Roadian-Wordian. The third and youngest, dated as Lopingian, is only found in Italy, in the Bolzano Basin. Because of sedimentary gaps, limited observations, sometimes erroneous determinations, and ichnospecies with great vertical distribution, it currently appears that footprints have a low utility for biochronological resolution. Nevertheless, they allow us to discriminate three time intervals in the Permian, as is also the case for skeletal remains.

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Contents

Geological Society, London, Special Publications

Non-Marine Permian Biostratigraphy and Biochronology

Spencer G. Lucas
Spencer G. Lucas
New Mexico Museum of Natural History, USA
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;
Giuseppe Cassinis
Giuseppe Cassinis
Universitfi di Pavia, Italy
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;
Joerg W. Schneider
Joerg W. Schneider
TU Bergakademie Freiberg, Germany
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Geological Society of London
Volume
265
ISBN electronic:
9781862395138
Publication date:
January 01, 2006

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