| details |
Late Devonian |
|
Canada(Alberta) |
Downie,C. et al. On the interpretation and status of some Hystrichosphere genera. |
1963 |
| details |
Nd |
|
Nd |
Downie,C. et al. Bibliography and index of fossil dinoflagellates and acritarchs. |
1965 |
| original |
Middle Kinderhookian |
|
Missouri |
Brown,D.D. Palynology of the Hannibal Formation, (Lower Mississippian), of northeast Missouri and western Illinois. |
1969 |
| original |
Middle Kinderhookian |
|
Illinois |
Brown,D.D. Palynology of the Hannibal Formation, (Lower Mississippian), of northeast Missouri and western Illinois. |
1969 |