| link
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From
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To
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Geolocation
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Author - title
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Year
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|---|---|---|---|---|---|
| details | Silurian | Libya | Richardson,J.B. et al. Silurian palynomorphs from the Tanezzuft and Acacus Formations, Tripolitania, North Africa. | 1973 | |
| details | Emsian | Uruguay | PŠ¶the de Baldis,E.D. Additional Paleomicroplankton from the Lower Devonian of Uruguay. | 1977 | |
| details | Early Gothlandian | Nd | Fensome,R.A. et al. Acritarchs and Fossil Prasinophytes: An index to genera, species and infraspecific taxa. | 1990 |