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A new dinoflagellate cyst from the Middle Jurassic of England
| Beju, D. | |
| 1979 | |
| Neues Jahrb. f³r Geol. und Palaeont. Monatshefte pp.1-6 | |
| A new dinoflagellate cyst from the Middle Jurassic of England |
Beju, D. 1979: A new dinoflagellate cyst from the Middle Jurassic of England. --N. Jb. Geol. Palaont. Mh., 1979 (1): 1--6; Stuttgart. Abstract: Arkellidinium triapertum n. g. n. sp. from the Oxford Clay (P. althea zone) of England is proposed for cavate dinoflagellate cysts with a typical apical archeopyle devoid of antapical horns. The type species--A. triapertum--is set apart from all known cavate dinocysts by having a combination of an apical archaeopyle and two additonal ventral antapical apertures.