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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 | Nd | Nd | Balme,B.E. Fossil in situ, spores and pollen grains: An annotated catalogue. | 1995 | |
| details | Early Eifelian | Canada(Arctic) | Arkhangelskaya,A.D. et al. Correlation of the Lower Middle Devonian Elenisporis biformis spore Subzone in Arctic Canada and the USSR. | 1990 | |
| details | Late Emsian | Eifelian | USSR(European) | Arkhangelskaya,A.D. et al. Correlation of the Lower Middle Devonian Elenisporis biformis spore Subzone in Arctic Canada and the USSR. | 1990 |