Cyrtospora tiara
- Citations total:
- 2
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| details | Early Famennian | Middle Famennian | Canada(NWT) | Zwan,C.J.Van Der et al. The Cyrtospora cristifer, morphon. | 1981 |
| details | Early Famennian | Middle Famennian | Canada(Yukon) | Zwan,C.J.Van Der et al. The Cyrtospora cristifer, morphon. | 1981 |