| details |
Maastrichtian |
|
Texas |
Zaitzeff,J.B. Taxonomic and stratigraphic significance of dinoflagellates and acritarchs of the Navarro Group, (Maestrichtian), from eastcentral and southwest Texas. |
1967 |
| details |
Early Eocene |
Middle Eocene |
Canada(NWT,Mackenzie) |
Young,F.G. et al. Cenozoic stratigraphy of the MacKenzie Delta, NWT. |
1984 |
| details |
Late Llandoverian |
Early Wenlockian |
Lithuania |
Yankauskas,T.V. et al. Upper Llandoverian and Lower Wenlockian acritarch assemblages from the Ledai-179 boring in Lithuania. |
2004 |
| details |
Early Hettangian |
Middle Hettangian |
France(Paris Basin) |
Yang,Z. et al. Hettangian and Sinemurian magnetostratigraphy from Paris Basin |
1996 |
| details |
Senecan |
Chautauquan |
New York |
Wood,G.D. Palynology and paleobotany of the Jave and Lowermost Canadaway Formations, Upper Devonian, (Senecan/Chautauquan ), New York State. |
1978 |
| details |
Tremadocian |
Early Arenigian |
Spain |
Wolf,R. The Lower and Upper boundary of the Ordovician System of some selected regions, (Celtiberia, Eastern Sierra Morena) in Spain. Part 1: The Lower Ordovician Sequence of Celtiberia. |
1980 |
| details |
Early Tertiary |
|
Nd |
Williams,G.L. Dinoflagellates, acritarchs and tasmanitids. |
1978 |
| details |
Kimmeridgian |
|
Canada(Eastern Offshore) |
Williams,G.L. et al. Stratigraphy of the Shell Naskapi N-30 Well, Scotian Shelf, Eastern Canada |
1974 |
| details |
Eocene |
Early Oligocene |
Atlantic Coast Offshore |
Williams,G.L. et al. Palynologic analyses of Upper Mesozoic and Cenozoic rocks of the Grand Banks, Atlantic Continental Margin. |
1975 |
| details |
Anisian |
|
Ireland(Isle Of Man) |
Wilkinson,I.P. et al. Offshore micropalaeontological biostratigraphy of southern and western Britain. |
1980 |
| details |
Aptian |
Early Albian |
Canada(Alberta) |
Wightman,D.M. et al. Depositional modelling of the Upper Mannville (Lower Cretaceous), eastcentral Alberta. Implications for the recognition of brackish-water deposits. (In: Reservoir Sedimentology. R. Tillman and K.J. Weber, editors) |
1987 |
| details |
Late Siegenian |
Middle Givetian |
Canada(Ontario) |
Wicander,R. A catalogue and biostratigraphic distribution of North American Devonian acritarchs. |
1983 |
| details |
Late Frasnian |
|
Iowa |
Wicander,R. et al. Acritarchs and spores from the Upper Devonian Lime Creek Formation, Iowa, USA. |
1985 |
| details |
Late Siegenian |
Middle Givetian |
North America |
Wicander,R. Middle Devonian acritarch biostratigraphy of North America |
1984 |
| details |
Late Bajocian |
Early Bathonian |
North Sea |
Whitaker,M.F. et al. Palynological review of the Brent Group, United Kingdom Sector, North Sea. (In: Geology of the Brent Group. A.C.Morton et al, editors) |
1992 |
| details |
Early Oligocene |
|
Belgium |
Weyns,W. Dinophyceae and acritarcha in the "Sands of Grimmertingen" in their type locality, and the stratigraphic problem of Tongrian. |
1970 |
| details |
Late Ludlovian |
|
England(Herefordshire) |
Wetherall,P.M. et al. Palynology, biostratigraphy, and depositional environments around the Ludlow-Pridoli boundary at Woodbury Quarry, Herefordshire, England. |
1999 |