Trachysphaeridium opacum
- Citations total:
- 3
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| details | Sinian | Silurian | China(Hupei) | Zhang,G. Sinian and Silurian plant microfossils | 1978 |
| details | Llanvirnian | Ashgillian | China(Shansi) | Fu,J. The Ordovician group of micropalaeoflora from Xiliangsi and Jiancaogou Formation of Zhenba Shaanxi. | 1986 |
| details | Late Tremadocian | Llanvirnian | China(Yunnan) | Fang,X. Ordovician micropaleoflora in Kunming-Luquan Region, Yunnan Province, and its stratigraphical significance. | 1987 |