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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 Jurassic | Canada(British Columbia) | Rouse,G.E. Plant microfossils from Kootenay Coal-Measures strata of British Columbia. | 1959 | |
| details | Early Cretaceous | Montana | Potonie,R. Synopsis of the genera of the sporae dispersae. Part 1 | 1956 | |
| original | Early Cretaceous | Montana | Miner,E.L. Paleobotanical examinations of Cretaceous and Tertiary Coals.1.Cretaceous Coals from Greenland. 2.Cretaceous and Tertiary Oals from Montana. | 1935 |