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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 | Late Tatarian | Early Triassic | USSR(Komi ASSR) | Chalyashev,V.I. On stratigraphy of the Upper Permian and Triassic of northern Pre-Ural | 1963 |
| details | Westphalian A | Canada(Nova Scotia) | Hower,J.C. et al. Metalliferous coals of the Westphalian A Joggins Formation, Cumberland Basin, Nova Scotia, Canada: petrology, geochemistry, and palynology. | 2000 |