Ancyrochitina ramosaspina
- Citations total:
- 2
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| details | Early Silurian | Iran | Ghavidel-Syooki,M. Chitinozoan biostratigraphy and palaeogeography of Late Ordovician and Early Silurian strata at southwestern Bojnurd City in eastern Alborz Mountain Ranges (Kopet Dagh Region), Southeastern Caspian Sea. | 1998 | |
| details | Late Rhuddanian | Canada(Anticosti Island) | Soufiane,A. et al. Chitinozoan zonation of the Late Ordovician and the Early Silurian of the island of Anticosti, Quebec, Canada. | 2000 |