Sphaeralcea sp
- Citations total:
- 2
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| details | Early Miocene | Middle Miocene | California | Barnett,J. Palynology and paleoecology of the Tertiary Weaverville Formation, Northwestern California, USA. | 1989 |
| details | Middle Miocene | Mautino,L.R. et al. Diversity and evolutionary meaning of pollen of Malvaceae in the Formation San Jose (Middle Miocene), TucumĐŽn, Argentina. | 2001 |