original |
Maastrichtian |
|
Texas |
Zaitzeff,J.B. Taxonomic and stratigraphic significance of dinoflagellates and acritarchs of the Navarro Group, (Maestrichtian), from eastcentral and southwest Texas. |
1967 |
original |
Maastrichtian |
|
Texas |
Zaitzeff,J.B. et al. The use of dinoflagellates and acritarchs for zonation and correlation of the Navarro Group (Maestrichtian), of Texas. (In: Symposium on Palynology of the Late Cretaceous and Early Tertiary. R.M Kosanke and A.T. Cross, editors) |
1970 |
original |
Middle Eocene |
Early Oligocene |
Atlantic(Greenland Sea) |
Firth,J.V. Upper Middle Eocene to Oligocene dinoflagellate biostratigraphy and assemblage variations in Hole 913B, Greenland Sea |
1996 |
original |
Early Maestrichtian |
|
Arctic Ocean |
Firth,J.V. et al. An Early Maestrichtian organic-walled phytoplankton cyst assemblage from an organic-rich Black Mud in core Fl-533, Alpha Ridge: Evidence for upwelling conditions in the Cretaceous Arctic Ocean |
1998 |