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Ostracods, organic matter and anoxic events associated with the Frasnian/Famennian boundary in the Schmidt quarry (Germany)
Casier, J.G.; Lethiers, F.; Baudin, F. (1999). Ostracods, organic matter and anoxic events associated with the Frasnian/Famennian boundary in the Schmidt quarry (Germany). Géobios 32(6): 869-881. dx.doi.org/10.1016/S0016-6995(99)80869-9
In: Géobios. Association Européenne de Paléontologie: Lyon. ISSN 0016-6995, more
Peer reviewed article  

Available in  Authors 
    VLIZ: Open Repository 279564 [ OMA ]

Keywords
Author keywords
    extinction; ostracods; Frasnian; Famennian; anoxia; Schmidt quarry

Authors  Top 
  • Casier, J.G.
  • Lethiers, F.
  • Baudin, F.

Abstract
    The distribution of ostracods across the Frasnian/Famennian boundary in the Schmidt quarry is documented and all the benthonic species figured. Eighty per cent of the Frasnian ostracods disappeared close to this boundary, and all myodocopid species (Entomozoacea and Cypridinacea) were exterminated. The recovery in the Famennian seems to have been slow and gradual, and twelve lazarus species have been identified. These benthonic ostracods probably survived the Late Frasnian anoxic event sheltered in shallower marine environments. A strong relationship exists in the Schmidt quarry between fluctuations of the oxygen content of the bottom waters as displayed by the ostracod distribution, and the total organic carbon contents measured by the Rock-Eval Pyrolysis. Two new species are erected: Ampuloides kellerwaldensis nov, sp. and Acratia badwildungensis nov, sp.

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