| 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 | Middle Ordovician | Canada(Ontario) | Paris,F. et al. A revised chitinozoan classification | 1999 | |
| details | Late Caradocian | Middle Ashgillian | Iran | Ghavidel-Syooki,M. et al. Biostratigraphy and palaeogeography of Late Ordovician chitinozoans from the northeastern Alborz Range, Iran | 2002 |
| details | Ashgillian | Russia(Siberia) | Sennikov,N.V. et al. Synthesis of the graptolite and chitinozoan scales for the Altai-Salair Ordovician Basin (Siberia, Russia). | 2003 |