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Dinoflagellate cysts from an allochthonous block of Nordenskjold Formation (Upper Jurassic), northwest James Ross Island.
| Snape, M.G. | |
| 1992 | |
| In: Duane, A.M., Pirrie, D. and Riding, J.B. (eds.), 1992: Palynology of the James Ross Island Are | |
| Dinoflagellate cysts from an allochthonous block of Nordenskjold Formation (Upper Jurassic), northwest James Ross Island. |
Snape, M.G., 1992: Dinoflagellate cysts from an allochthonous block of Nordenskjold Formation (Upper Jurassic), northwest James Ross Island. In: Duane, A.M., Pirrie, D. and Riding, J.B. (eds.), 1992: Palynology of the James Ross Island Area, Antarctic Peninsula. Antarctic Science, Volume 4,No.3: 267-278 Special Issue, September 1992. Blackwell Scientific Publications Abstract: An allochthonous block of the Nordenskjold Formation from north-west James Ross Island, Antarctic Peninsula has yielded a diverse marine palynoflora. Dinoflagellate cyst assemblages from the 185 m thick sequence are described and compared with similar microfloras previously described from Australia, Papua New Guinea and Madagascar. A mid Tithonian (Late Jurassic) age is suggested for the section. One new genus, Helbydinium gen. nov. and four new species, Helbydinium scabratum sp. nov., Leptodinium acneum sp. nov., Leptodinium posterosulcatum sp. nov. and Rhynchodiniopsis foveata sp. nov. are described.