- Author:
- Knox,A.S.
- Year:
- 1960
- Title:
- Letter to the Editor
- Reference:
- Knox,A.S. (1960) Letter to the Editor Geotimes Vol. 4 # 8 P. 30- 30
- Google Academy:
- try to search by title in english
| Genus | Species | Country(Region) | From | To |
|---|---|---|---|---|
| Conifers | Conifers | USA(Dist.of Columbia) | Early Cretaceous | |
| Cycads | Cycads | USA(Dist.of Columbia) | Early Cretaceous | |
| Dicotyledonae | Dicotyledonae | USA(Dist.of Columbia) | Early Cretaceous | |
| Ferns | Ferns | USA(Dist.of Columbia) | Early Cretaceous | |
| Fungal spore | Fungal spore | USA(Dist.of Columbia) | Early Cretaceous | |
| Lycopods | Lycopods | USA(Dist.of Columbia) | Early Cretaceous |