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From
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Geolocation
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Author - title
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Year
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| details | Tremadocian | USSR(Russian Platform) | Andreeva,E.M. Guide complexes of plant microfossils of the Upper Proterozoic and lower deposits of the Russian Platform. (In: Palynology, Method and Stratigraphy) | 1973 | |
| details | Middle Cambrian | USSR(Leningrad) | Timofeev,B.V. et al. Microfossils of the Precambrian, Cambrian and Ordovician. | 1976 | |
| details | Middle Cambrian | Late Cambrian | Nd | Fensome,R.A. et al. Acritarchs and Fossil Prasinophytes: An index to genera, species and infraspecific taxa. | 1990 |