Trachysphaeridium undulatum
- Citations total:
- 3
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| details | Late Tremadocian | China(Yunnan) | Fang,X. Ordovician micropaleoplants in Kunming-Luguan Region, Yunnan Province and their stratigraphical significance. | 1985 | |
| original | Arenigian | China(Yunnan) | Fang,X. Ordovician micropaleoflora in Kunming-Luquan Region, Yunnan Province, and its stratigraphical significance. | 1987 | |
| details | Nd | Nd | Fensome,R.A. et al. Acritarchs and Fossil Prasinophytes: An index to genera, species and infraspecific taxa. | 1990 |