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Geolocation
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Author - title
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Year
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| details | Llandoverian | USSR(Tuvinskaya A.O.) | Sheshegova,L.I. Phytoplankton of the Silurian from the Tuva, (the section of the "Elegest"). | 1975 | |
| details | Llandoverian | Romania | Iordan,M. et al. Litho and biostratigraphy of the Paleozoic Sequences in the Oprisor and Girla Mare Boreholes, (southwestern part of the Moesian Platform). | 1985 | |
| details | Middle Siegenian | Emsian | Nd | Fensome,R.A. et al. Acritarchs and Fossil Prasinophytes: An index to genera, species and infraspecific taxa. | 1990 |