Fractoricoronula trirhetica
- Citations total:
- 3
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| original | Harnagian | Longvillian | England(Shropshire) | Turner,R.E. Acritarchs from the type area of the Ordovician Caradoc Series, Shropshire, England. | 1984 |
| details | Harnagian | Longvillian | Nd | Fensome,R.A. et al. Acritarchs and Fossil Prasinophytes: An index to genera, species and infraspecific taxa. | 1990 |
| details | Caradocian | England | Molyneux,S.G. et al. Paleozoic phytoplankton. (Principles and Applications. Applications. J.Jansonius and D.C.McGregor, editors.) | 1996 |