| original |
Early Valanginian |
Middle Valanginian |
Canada(NWT,Mackenzie) |
McIntyre,D.J. et al. Valanginian miospore and microplankton assemblages from the northern Richardson Mountains, District of MacKenzie, Canada. |
1980 |
| details |
Hauterivian |
Barremian |
Alaska |
Mickey,M.B. et al. Paleontologic data: Tingmerkpuk and related units, Northwestern De Long Mountains, Brooks Ranke, Alaska. |
1995 |
| details |
Hauterivian |
Barremian |
Alaska |
Mickey,M.B et al. Paleontologic data: Tingmerkpuk Sandstone and related units, northwestern de Long Mountains, Brooks Range, Alaska. |
1995 |
| details |
Nd |
|
Nd |
Stover,L.E. et al. Mesozoic-Tertiary dinoflagellates, acritarchs and Prasinophytes. (Principles and Applications. Applications. J.Jansonius and D.C.McGregor, editors.) |
1996 |
| details |
Nd |
|
Nd |
Williams,G.L. et al. The Lentin and Williams Index of Fossil Dinoflagellates.1998 Edition. |
1998 |
| details |
Valanginian |
Barremian |
Alaska(North Slope) |
Mickey,M.B. et al. Biostratigraphic report of 22 outcrop samples from North Slope, Alaska. (In: Micropaleontology of Cretaceous and Jurassic shales from the Northwestern Delong Mountains, Western Brooks Range, Alaska, 1994-1997. M.B.Mickey and H.Haga, editors) |
1998 |