| details |
Late Maestrichtian |
|
North Dakota |
Pearson,D.A. et al. Palynologically calibrated vertebrate record from North Dakota consistent with abrupt dinosaur extinction at the Cretaceous-Tertiary boundary. |
2001 |
| details |
Campanian |
Maestrichtian |
Canada(Alberta) |
Lerbekmo,J.F. et al. Magnetostratigraphic and biostratigraphic correlation of late Campanian and Maastrichtian marine and continental strata from the Red Deer Valley to the Cypress Hills, Alberta, Canada. |
2002 |
| details |
Early Maastrichtian |
Early Paleocene |
Canada(NWT,Mackenzie) |
Sweet,A.R. et al. Paleontology and diamonds: Geological environments associated with kimberlite emplacement, Lac de Gras, Northwest Territories, canada. |
2003 |