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Showing 1 to 1 of 1 for “"Frasnian/Famennian Extinction"”.
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Revision of the Upper Devonian in the Central-Southern Appalachian Basin: Biostratigraphy and Lithostratigraphy
… zones. 19 local biozones are described. The Frasnian/Famennian boundary is accurately placed based on occurrences of internationally known index fossils. The Frasnian/Famennian extinction event is recognized and is determined to have two pulses. The local biostratigraphic zonations doubled …