| 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 | Late Mississippian | Arizona | Billingsley,G.H. et al. Pre-Supai buried valleys. (In: The Supai Group of Grand Canyon. E.D.McKee) | 1982 | |
| details | Precambriam | Arizona | Bloeser,B. et al. Chitinozoans from the Late Precambrian Chuar Group of the Grand Canyon, Arizona. | 1977 | |
| details | Nd | Antarctica | Timofeev,B.V. Precambrian spores of the East Antarctica. (Summary) | 1959 | |
| details | Claiborne | Alabama | Gray,J. Temperate pollen genera in the Eocene, (Claiborne), flora, Alabama. | 1960 |