Ostracod evidence for an abrupt mass extinction at the FrasnianFamennian boundary (Devils Gate, Nevada, USA)
Casier, J.G.; Lethiers, F.; Claeys, P. (1996). Ostracod evidence for an abrupt mass extinction at the FrasnianFamennian boundary (Devils Gate, Nevada, USA). C. r. Acad. sci., Sér. 2, Sci. terre planètes 322(5): 415-422
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; e-ISSN 1778-4107, meer
The study of the Late Devonian Devils Gate Pass section west of the Pilot basin (Nevada, USA) shows an abrupt change in ostracod fauna at the Frasnian/Famennian boundary (FFB). More than 75% of the ostracod species present in the uppermost beds of the Frasnian disappear across the boundary. This extinction rate is comparable to that observed at the FFB at Coumiac (France) and seems to demonstrate that, at least in lower latitudes, the FFB mais extinction is an abrupt and widespread event.
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