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From
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To
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Geolocation
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Author - title
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Year
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| details | Eifelian | Givetian | Northern Hemisphere | Richardson,J.B. et al. Silurian and Devonian spore zones of the Old Red Sandstone continent and adjacent regions. | 1986 |
| details | Late Eifelian | Early Givetian | Iowa | Urban,J.B. Palynologic studies of the Devonian | 1968 |
| details | Early Eifelian | Early Givetian | W.Germany(Rhineland) | Riegel,W. The dispersed spores of the Emsian, Eifelian and Givetian Stages of the Eifel, (Rheineisches Schiefergebirge), and their stratigraphic and paleofloristic significance. | 1975 |