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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 | Late Givetian | W.Germany(Bavaria) | Dorning,K.J. Silurian acritarchs from the type Wenlock and Ludlow of Shropshire, England. | 1981 | |
| details | Ordovician | Nd | Fensome,R.A. et al. Acritarchs and Fossil Prasinophytes: An index to genera, species and infraspecific taxa. | 1990 | |
| details | Nd | Nd | Williams,G.L. et al. The Lentin and Williams Index of Fossil Dinoflagellates.1998 Edition. | 1998 |