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Geolocation
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Author - title
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Year
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| details | Late Hirnantian | Algeria | Paris,F. et al. The effects of the final stages of the Late Ordovician glaciation on marine palynomorphs (chitinozoans, acritarchs, leiospheres) in Well NI-2 (northeast Algerian Sahara). | 2000 | |
| original | Ashgillian | Oklahoma | Loeblich,A.R.,Jr. et al. North American species of the Ordovician acritarch genus Aremoricanium. | 1971 |