Sphenophyllostachys bifurcatus
- Citations total:
- 2
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| details | Middle Pennsylvanian | Late Pennsylvanian | Illinois | Potonie,R. Synopsis of the Sporae in situ. | 1962 |
| details | Carboniferous | USA | Balme,B.E. Fossil in situ, spores and pollen grains: An annotated catalogue. | 1995 |