1 An age in the Early Devonian Epoch preceded by the Siegennian, followed by the Eifelian, and dated at 407–397.5 Ma (Int. Commission on Stratigraphy, 2004).
2 The name of the corresponding European stage, which is roughly contemporaneous with the lower Cunninghamian (Australia) and part of the Onesquethawian (N. America).
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