Focusphaera
- Citations total:
- 3
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Geolocation
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Author - title
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Year
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| original | Arenigian | Llanvirnian | Brazil(Amazonas) | de Quadros,L.P. Occurence of Ordovician microfossils (Acritarchae) in the Alto Amazon Sub Basin, Brazil. | 1986 |
| details | Nd | Nd | Fensome,R.A. et al. Acritarchs and Fossil Prasinophytes: An index to genera, species and infraspecific taxa. | 1990 | |
| details | Ordovician | Nd | Servais,T. An annotated bibliographical review of Ordovician acritarchs | 1997 |