| 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 |
Late Berriasian |
Valanginian |
USA(Gulf of Mexico) |
Riley,L.A. et al. Palynostratigraphy of the Berriasian to Cenomanian sequence at Deep Sea Drilling Project Site 535, Leg 77, southeastern Gulf of Mexico. |
1984 |
| details |
Nd |
|
Nd |
Benson,D.G.,Jr Observations and recommendations on the fossil dinocyst genera Ctenidodinium, Dichadogonyaulax and Korystocysta. |
1985 |
| details |
Nd |
|
Nd |
Williams,G.L. et al. The Lentin and Williams Index of Fossil Dinoflagellates.1998 Edition. |
1998 |