- Author:
- Zimmerman,R.P.
- Year:
- 1970
- Title:
- The ultrastructure of Paleozoic megaspores membranes.
- Reference:
- Zimmerman,R.P. (1970) The ultrastructure of Paleozoic megaspores membranes. Pollen et Spores Vol. 12 # 3 P. 451- 468
- Google Academy:
- try to search by title in english
| Genus | Species | Country(Region) | From | To |
|---|---|---|---|---|
| Conostoma | Conostoma kestospermum | USA | Middle Pennsylvanian | |
| Hexapterospermum | Hexapterospermum delvoryii | USA | Middle Pennsylvanian | |
| Mazocarpon | Mazocarpon oedipternum | USA | Late Pennsylvanian | |
| Mitrospermum | Mitrospermum compressum | USA | Early Pennsylvanian | |
| Pachytesta | Pachytesta berryvillensis | USA | Late Pennsylvanian | |
| Pachytesta | Pachytesta composita | USA | Middle Pennsylvanian | |
| Pachytesta | Pachytesta illinoensis | USA | Middle Pennsylvanian | Late Pennsylvanian |
| Taxospermum | Taxospermum undulatum | USA | Middle Pennsylvanian |