original |
Callovian |
Oxfordian |
Canada(NWT,Franklin) |
Johnson,C.D. et al. Microplankton zones of the Savik Formation (Jurassic), Axel Heiberg and Ellesmere Islands, District of Franklin. |
1973 |
original |
Callovian |
Early Oxfordian |
Canada(NWT,Franklin) |
Brideaux,W.W. et al. Upper Jurassic-Lower Cretaceous dinoflagellate assemblages from Arctic Canada. |
1976 |
original |
Early Callovian |
Oxfordian |
Canada(NWT) |
Dolby,G. et al. The micropalaeontology, palynology and stratigraphy of the Panarctic et al.Chadis Creek B-64 Well. |
1978 |