Sphaeralcea
- Citations total:
- 4
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Geolocation
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Author - title
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Year
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| details | Middle Miocene | Colorado | Leopold,E.B. Late Cenozoic palynology. (In: Aspects of Palynology. R.H. Tschudy and R.A. Scott, editors) | 1969 | |
| details | Late Pliocene | Idaho | Leopold,E.B. et al. Development and affinites of Tertiary floras in the Rocky Mountains | 1972 | |
| details | Clarendonian | Arizona | Gray,J. Late Tertiary microflora from the Basin and range Province, Arizona. | 1960 | |
| details | Late Miocene | Idaho | Cross,A.T. et al. Additions to the Upper Miocene Succor Creek flora, eastern Oregon. | 1971 |