Paléoécologie des Ostracodes au niveau de la limite des étages Frasnien et Famennnien, à Senzeilles
Casier, J.-G. (1989). Paléoécologie des Ostracodes au niveau de la limite des étages Frasnien et Famennnien, à Senzeilles. Bull. Kon. Belg. Inst. Natuurwet. Aardwet. = Bull. - Inst. r. sci. nat. Belg., Sci. Terre 59: 79-93 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 |   |
| Keywords | 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
Entomozoacea; Ostracoda [WoRMS]
Belgium [Marine Regions]; Belgium, Cerfontaine [Marine Regions]
Marine/Coastal | | Author keywords | Ostracods, Frasnian-Famennian Boundary, Belgium, Paleoecology, Extinction, Ostracodes, Limite Frasnien-Famennien, Belgique, Paléoécologie |
| Abstract | Study of the ostracods of the Frasnian-Famennian boundary in Senzeilles (Dinant Basin, Belgium) confirms the existence of shallow, poorly oxygenated waters in Palaeotethys during the late Frasnian. These environments are responsible for the disappearance of mud-mounds and for the sedimentation of the so-called « Matagne Shales » which are rich in Entomozoacea and Cypridinacea. The faunal change on which the Frasnian-Famennian boundary was defined in last century by GOSSELET corresponds to Ihe gradual colonization of such an environment after ihe improvement of the oxygen supply. The extinction rate of the OStracods near the Frasnian-Famennian boundary is not abnormal. |
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