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Dinoflagellate cysts at the Jurassic- Cretaceous boundary, offshore Newfoundland, Canada
| Van Helden, B.G.T. | |
| 1986 | |
| Palynology, vol.10: 181-199Palynology, vol.10: 181-199 | |
| Dinoflagellate cysts at the Jurassic- Cretaceous boundary, offshore Newfoundland, Canada |
Van Helden, B.G.T., 1986: Dinoflagellate cysts at the Jurassic-Cretaceous boundary, offshore Newfoundland, Canada. Palynology, vol.10: 181-199. Moderately rich dinoflagellate cyst floras were recovered from shales and sandstones underlying the Hibernia sandstone member in the Jeanne d"Arc subbasin of the East Newfoundland basin. Based on these dinoflagellate cysts this interval is provisionally dated as Portlandian to early Valanginian. Two dinoflagellate cyst assemblage zones are recognized in this interval: the Amphorula metaelliptica assemblage zone underlying the Endoscrinium campanulum assemblage zone. Amphorula delicata sp. nov. and Cantulodinium arthuriae sp. nov. are described from the Amphorula metaelliptica assemblage zone and the generic diagnosis of Cantulodinium is emended.