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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 | Caradocian | England(Shropshire) | Turner,R.E. Reworked acritarchs from the type section of the Ordovician Caradoc series. Shropshire. | 1982 | |
| details | Late Cambrian | Early Ordovician | Nd | Fensome,R.A. et al. Acritarchs and Fossil Prasinophytes: An index to genera, species and infraspecific taxa. | 1990 |