| details |
Late Albian |
Middle Cenomanian |
Canada(Alberta) |
Bloch,J.D. et al. Sedimentology, micropaleontolgy, geochemistry, and hydrocarbon potential of shale from the Cretaceous Lower Colorado Group in Western Canada. |
1999 |
| details |
Nd |
|
Nd |
Williams,G.L. et al. The Lentin and Williams Index of Fossil Dinoflagellates.1998 Edition. |
1998 |
| details |
Late Albian |
Middle Cenomanian |
Canada |
Bloch,J.D. et al. Revised stratigraphy of the Lower Colorado Group (Albian to Turonian), Western Canada. |
1993 |
| details |
Early Cenomanian |
|
Nd |
Fensome,R.A. et al. Acritarchs and Fossil Prasinophytes: An index to genera, species and infraspecific taxa. |
1990 |
| original |
Early Cenomanian |
|
Canada(Alberta) |
Singh,C. Cenomanian microfloras of the Peace River area Northwestern Alberta |
1983 |