| link
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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 | Paleocene | Montana | Radforth,N.W. et al. Floral transgression of major geological time zones. | 1956 | |
| details | Late Cretaceous | Canada(Alberta) | Radforth,N.W. et al. The classification of recently discovered Cretaceous plant microfossils of potential importance to the stratigrphy of Western Canada. | 1953 | |
| original | Paleocene | Montana | Wilson,L.R. et al. Plant microfossils from a Fort Union Coal of Montana. | 1946 |