Les Ostracodes qui disparaissent avec l'événement Frasnien-Famennien au limitotype de Coumiac (Montagne Noire, France)
Lethiers, F.; Casier, J.-G. (1996). Les Ostracodes qui disparaissent avec l'événement Frasnien-Famennien au limitotype de Coumiac (Montagne Noire, France). Bull. Kon. Belg. Inst. Natuurwet. Aardwet. = Bull. - Inst. r. sci. nat. Belg., Sci. Terre 66: 73-91
In: Bulletin van het Koninklijk Belgisch Instituut voor Natuurwetenschappen. Aardwetenschappen = Bulletin de l'Institut Royal des Sciences Naturelles de Belgique. Sciences de la Terre. KBIN: Brussel. ISSN 0374-6291, more
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| Keywords |
Geological time > Phanerozoic > Paleozoic > Palaeozoic > Devonian
Geological time > Phanerozoic > Paleozoic > Palaeozoic > Devonian > Devonian, Upper
Geological time > Phanerozoic > Paleozoic > Palaeozoic > Devonian > Devonian, Upper > Famennian
Geological time > Phanerozoic > Paleozoic > Palaeozoic > Devonian > Devonian, Upper > Frasnian
Ostracoda [WoRMS]
France [Marine Regions]
Marine/Coastal |
| Author keywords |
Ostracods - Coumiac - Frasnian - Extinction - Paleoecology, Ostracodes - Frasnien - Paléoécologie. |
| Authors | | Top |
- Lethiers, F.
- Casier, J.-G., more
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| Abstract |
We present the study of ostracods from the gigas Zone, which disappear during the F/F crisis, at the famous Coumiac upper quarry. We have recorded and figured forty-three species. Nine are described, five of which are new: Microcheilinella frumentaria nov. sp., M. postfecunda nov. sp., Grammia lorenzi nov. sp., Famenella declivis nov. sp. and Bairdiacypris nana nov. sp. Podocopid ostracods predominate in this association where Aparchitacea and Entomozoacea are also present unlike Metacopida. Benthic ostracod characters, especially the 10 percent of ostracods belonging to the Thuringian assemblage, show that the paleoenvironment was a well oxygenated shoal on an outer continental shelf. |
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