- Author:
- Millay,M.A.;Eggert,D.A.
- Year:
- 1974
- Title:
- Microgametophyte development in the Paleozoic seed fern Family Callistophytaceae.
- Reference:
- Millay,M.A. et al. (1974) Microgametophyte development in the Paleozoic seed fern Family Callistophytaceae. American Journal of Botany Vol. 61 # 10 P. 1067- 1075
- Google Academy:
- try to search by title in english
| Genus | Species | Country(Region) | From | To |
|---|---|---|---|---|
| Callandrium | Callandrium callistophytoides | Illinois | Late Pennsylvanian | |
| Idanothekion | Idanothekion glandulosum | Illinois | Middle Pennsylvanian | |
| Vesicaspora | Vesicaspora | Illinois | Middle Pennsylvanian | |
| Vesicaspora | Vesicaspora | Illinois | Late Pennsylvanian |