Tsuga gracilis
- Citations total:
- 2
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| details | Lutetian | California | Frederiksen,N.O. et al. Middle Eocene palynomorphs from San Diego, California;Part I:Introduction, spores and Gymnosperm pollen. | 1983 | |
| details | Cenozoic | China(Kirin) | Sun,J.-Z. et al. Chronological study of the Cenozoic Volcanic rocks of Julin. | 1984 |