| original |
Blackriveran |
|
Canada(Ontario) |
Bunner,W.D. et al. A new species of Dicommopalla (Acritarcha) from the Middle Ordovician Simcoe Group of Southern Ontario, Canada. |
1989 |
| details |
Blackriveran |
Rocklandian |
Canada(Ontario) |
Bunner,W.D. et al. A new species of Dicommopalla (Acritarcha) from the Middle Ordovician Simcoe Group of Southern Ontario, Canada. |
1989 |
| details |
Middle Ordovician |
|
Nd |
Fensome,R.A. et al. Acritarchs and Fossil Prasinophytes: An index to genera, species and infraspecific taxa. |
1990 |