| original |
Hauterivian |
Barremian |
Canada(NWT,Mackenzie) |
Brideaux,W.W. Taxonomy of Upper Jurassic -Lower Cretaceous microplankton from the Richardson Mountains, District of MacKenzie, Canda. |
1977 |
| details |
Hauterivian |
Barremian |
Canada(NWT,Mackenzie) |
Lentin,J.K. et al. Fossil dinoflagellates: Index to genera and species, 1981 edition. |
1981 |
| details |
Barremian |
|
Nd |
Fensome,R.A. et al. Acritarchs and Fossil Prasinophytes: An index to genera, species and infraspecific taxa. |
1990 |
| details |
Nd |
|
Nd |
Williams,G.L. et al. The Lentin and Williams Index of Fossil Dinoflagellates.1998 Edition. |
1998 |