Hystricosporites expandus
- Citations total:
- 2
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| details | Frasnian | Famennian | Canada(NWT,Mackenzie) | Hills,L.V. et al. Megaspores, Imperial Formation (Upper Devonian) Mountain River, District of MacKenzie | 1984 |
| original | Givetian | Frasnian | Canada(Arctic) | Chi,B.I. et al. Biostratigraphy and taxonomy of Devonian Imegaspores, Arctic, Canada. | 1976 |