Umbellularia
- Citations total:
- 2
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Geolocation
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Author - title
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| details | Pliocene | California | Fleming,R.F. Pliocene climate of the Colorado Plateau and the age of the Grand Canyon: evidence from Anza-Borrego, California | 1999 | |
| details | Early Miocene | Middle Miocene | USA(Pacific Northwest) | Wolfe,J.A. Neogene floristic and vegetational history of the Pacific Northwest. | 1969 |