Shale Shaker Vol 72, No 4 July-August 2021

Figure 3 - Regional correlation of conodont based Late Devonian extinctions at the Frasnian-Famennian and Devonian-Carboniferous boundaries (Over, 1990, 1992).

Figure 4 - Outcrop photo the thin siltstone beds- see inset photo.

July ~ August 2021 | Page 121

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