Abstract
The stratigraphic distribution of Upper Bathonian to early Middle Oxfordian dinoflagelIate cysts from localities in Jameson Land and in Milne Land, East Greenland, is evaluated. Using the range of selected species, their earliest appearances andlor extinction, six dinoflagelIate cyst zones and five subzones are proposed for the upper Middle and lower Upper Jurassic succession of central East Greenland. The proposed zonation scheme is correlated with the ammonite zonation of the investigated interval. Two new species, Chytroeisphaeridia grossa sp. nov. and Escharisphaeridia laevigata sp. nov. are formally described.
Highlights
The stratigraphic distribution of Upper Bathonian to early Middle Oxfordian dinoflagelIate cysts from localities in Jameson Land and in Milne Land, East Greenland, is evaluated
Jurassie dinoflagellate eysts were first described from East Greenland by Sarjeant (1972), who reeorded 51 species in two samples from the Vardekløft and Olympen Formations of Jameson Land
An important palynostratigraphie contribution was given by Piaseeki (1980) who outlined the stratigraphic distribution of 95 dinoflagellate eyst species through the Upper Callovian to Volgian sequenee of Milne Land
Summary
The stratigraphic distribution of Upper Bathonian to early Middle Oxfordian dinoflagelIate cysts from localities in Jameson Land and in Milne Land, East Greenland, is evaluated. Jurassie dinoflagellate eysts were first described from East Greenland by Sarjeant (1972), who reeorded 51 species in two samples from the Vardekløft and Olympen Formations of Jameson Land. The initial Jurassic transgression of the Jameson Land area took place in the Pliensbachian, while the irregular basernent surface of Milne Land (bordering the Jameson Land basin to the west) was inundated for the first time in the Late Bathonian (Callornon & Birkelund, 1980). By this time fully marine conditions were established on the Jameson Land area (Surlyk, 1978). Comparisons of the Bathonian to Oxfordian deposits of northern Jameson Land and the east coast of Milne Land in relation to the ammonite zonation are shown in fig
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