Ancyrochitina simplex
- Citations total:
- 3
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| original | Early Givetian | Grahn,Y. et al. Middle and Upper Devonian Chitinozoan biostratigraphy of the Parana Basin in Brazil and Paraguay. | 2002 | ||
| original | Early Givetian | Paraguay | Grahn,Y. et al. Middle and Upper Devonian Chitinozoan biostratigraphy of the Parana Basin in Brazil and Paraguay. | 2002 | |
| details | Late Eifelian | Early Givetian | Brazil(Paraiba) | Grahn,Y. Devonian chitinozoan biozones of Western Gondwana. | 2005 |