| original |
Algonkian |
|
Idaho |
Pflug,H.D. Organic remains of the Beltian Series of North America. |
1965 |
| original |
Algonkian |
|
Montana |
Pflug,H.D. Organic remains of the Beltian Series of North America. |
1965 |
| details |
Proterozoic |
|
Idaho |
Pflug,H.D. et al. Earliest phytoplankton of eukaryotic affinity. |
1985 |
| details |
Proterozoic |
Cambrian |
Montana |
Pflug,H.D. et al. Evolutionary changes in the Proterozoic. (In: Global Bio-Events. O.H.Walliser, editors; Proceeding,1st International Meeting of IGCP Project 216; Global Biology Events in Earth History. O.H.Walliser, editor) |
1986 |
| details |
Proterozoic |
Cambrian |
Idaho |
Pflug,H.D. et al. Evolutionary changes in the Proterozoic. (In: Global Bio-Events. O.H.Walliser, editors; Proceeding,1st International Meeting of IGCP Project 216; Global Biology Events in Earth History. O.H.Walliser, editor) |
1986 |
| details |
Early Riphean |
|
Idaho |
Pflug,H.D. et al. On the evolution of the eukaryotic phytoplankton in the Riphean: New evidence from the Beltian Series of North America. |
1988 |
| details |
Early Riphean |
|
Montana |
Pflug,H.D. et al. On the evolution of the eukaryotic phytoplankton in the Riphean: New evidence from the Beltian Series of North America. |
1988 |