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Ostracods Late Devonian mass extinction: the Schmidt quarry parastratotype (Kellerwald, Germany)
Casier, J.G.; Lethiers, F. (1998). Ostracods Late Devonian mass extinction: the Schmidt quarry parastratotype (Kellerwald, Germany). C. r. Acad. sci., Sér. 2, Sci. terre planètes 326(1): 71-78.
In: Comptes Rendus de l'Académie des Sciences. Série IIA. Sciences de la Terre et des Planètes = Earth and Planetary Science. Gauthiers-Villars: Paris. ISSN 1251-8050, more
Peer reviewed article  

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Author keywords
    ostracods; Frasnian/Famennian boundary; Kellerwald; Germany; extinction

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

    Sixty-eight ostracod species have been recognized (the benthonic one for the first rime) close to the Frasnian/Famennian boundary in the Schmidt quarry parastratotype. In the Late Frasnian, ostracods belong to an assemblage of the Eifelian ecotype and to the Myodocopid ecotype. In the base of the Famennian, they belong exclusively to the Eifelian ecotype.
    The oxygen content of the bottom waters during the deposition of the Upper Kellwasser horizon was highly unstable whereas this horizon was known to be anoxic. The Late Devonian mass extinction, probably the second in order of magnitude during the Phanerozoic, took place in the last 5 cm of the Upper Kellwasser horizon. Twelve ostracod species recognized in the Schmidt quarry survived this event.

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