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Jurassic dinoflagellate cysts with epitractal archaeopyles. A reconsideration
| Sarjeant, W.A.S. | |
| 1975a | |
| Grana vol.14 pp.49-56 pl.3 | |
| Jurassic dinoflagellate cysts with epitractal archaeopyles. A reconsideration |
Sarjeant, W.A.S., 1975; Jurassic dinoflagellate cysts with epitractal archaeopyles. A reconsideration. Grana vol.14 pp.49-56 pl.3 Abstract The history of study of these dinoflagellates is reviewed and emended diagnoses are proposed for the genera Ctenidodinium and Dichadogonyaulax. A new species, Dichadogonyaulax sellwoodii, is described and illustrated from the Bathonian of the Isle of Skye, Scotland. the new combination Dichadogonyaulax norrisii (Pocock, 1972) os proposed and it is considered that forms described by Gocht (1970) as Ctenidodinium pachydermum (Deflandre, 1938) may in fact be attributable to Pocock"s species. The speciss Ctenidodinium continuum Gocht, 1970, is briefly discussed and other Jurassic species attributable to these two genera are listed.