Williamsonia sp
- Citations total:
- 3
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Author - title
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| details | Aalenian | USSR(Kazakh SSR) | Vyalova,R.I. et al. Stratigraphy of Jurassic deposits of Southern Mangyshlak based on palynology. (In: Palynology in Petroleum Geology. N.M.Ivanova, editor) | 1971 | |
| original | Middle Jurassic | USSR(Kazakh SSR) | Vladimirovich,V.P. Pollen and spores in Coal bearing strata of the Kazakhstan Region | 1950 | |
| details | Paleogene | Neogene | China | Song,Z. et al. On Tertiary rain forest in China. | 2000 |