| original |
Early Callovian |
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Volkheimer,W. Palynological study of a Callovian Coal from Neuqu©n and considerations of the Jurassic paleoclimates of Argentina |
1972 |
| details |
Bathonian |
Middle Callovian |
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Volkheimer,W. et al. The continental margin of Gondwana, principally in central western Argentina. |
1980 |
| details |
Callovian |
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Volkheimer,W. et al. Stratigraphic distribution of Jurassic and Cretaceous palynomorphs in the Andean Realm and neighbouring areas of Southern South America, with special consideration of the Neuqu©n Basin. |
1981 |
| details |
Kimmeridgian |
Hauterivian |
Canada(NWT,Mackenzie) |
Fensome,R.A. Miospores from the Jurassic-Cretaceous boundary beds, Aklavik Range, Northwest Territories, Canada. (Incorporating taxonomic reviews of several Groups of Mid-Late Mesozoic miospores) |
1983 |
| details |
Callovian |
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Volkheimer,W. Advancement of the Microbiostratigraphy of the Jurassic in Argentina and comparison with other Regions of the Southern Heisphere |
1971 |
| details |
Early Callovian |
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Volkheimer,W. Stratigraphic distribution of spores and pollen in the Lower and Middle Jurassic of the Neuqu©n Basin Argentina. |
1971 |
| details |
Bajocian |
Callovian |
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Volkheimer,W. Fossil microfloras. |
1978 |
| details |
Late Bajocian |
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Quattrocchio,M.E. et al. Paleogeographic changes during the Middle Jurassic in the Southern Part of the Neuqu©n Basin, Argentina |
1996 |
| details |
Cretaceous |
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Argentina(Santa Cruz) |
Archangelsky,S. et al. Palynology studies of the Baquero Formation, (Cretaceous), Santa Cruz Province, Argentina.VI. |
1994 |