Arctium sp
- Citations total:
- 2
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| details | Early Pliocene | Middle Pliocene | China(Tibet) | Cao,L. Pliocene palynological flora in Disong of Burang, Xizang, (Tibet). | 1982 |
| original | Late Pliocene | Pleistocene | USSR(Urals) | Chigurayeva,A.A. et al. Compositae pollen in the Upper Poliocene and Pleistocene strata of the Volga-Ural Region | 1983 |