Paralecaniella indentata(Defl. & Cooks. 1955) Cookson & Eisenack 1970 and allied dinocysts
- 1 December 1977
- journal article
- other
- Published by Taylor & Francis in Palynology
- Vol. 1 (1) , 95-102
- https://doi.org/10.1080/01916122.1977.9989152
Abstract
Epicephalopyxis indentata Deflandre and Cookson 1955 was described from Paleocene to Miocene strata of Australia. Recovery of closely comparable specimens from the Tertiary of the Gulf of Alaska area allows a broader characterization of this unique marginal marine to marine organism, which is probably a dinocyst. Specimens exhibit a variable layered outer wall, a distinct inner body and an obscure to distinct structure which may represent either a sulcus or cingulum. The gaping opening seen in many specimens can be interpreted as an epitractal archeopyle; or alternatively there is one missing lateral half, the halves separating along a peripheral flange which obscures the position of a sulcus. Paralecaniella indentata is transferred from the Chlorophyta to the Pyrrhophyta on the presence of an inferred cingulum/sulcus. Fromea staveia n. sp. is described to document the type of obscure cingula possible in some dinocysts.Keywords
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