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Restudy of some larger dinoflagellate cysts and an acritarch from the upper Cretaceous of Belgium and Germany
Lejeune-Carpentier, M.; Sarjeant, W.A.S. (1981). Restudy of some larger dinoflagellate cysts and an acritarch from the upper Cretaceous of Belgium and Germany. Ann. Soc. géol. Belg. (1968) 104(1): 1-39
In: Annales de la Société Géologique de Belgique (1968). Vaillant-Carmanne: Liège. ISSN 0037-9395, more
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  • Lejeune-Carpentier, M.
  • Sarjeant, W.A.S.

    An account is presented of a restudy of type material of 13 species of dinoflagellate cysts and one species of acritarch from Upper Cretaceous flints of Belgium and Germany. The new combinations Amphorosphaeridium major (Lejeune-Carpentier), Hystrichokolpoma? crassipes (Reade) and Deflandrea damasii (Lejeune-Carpentier) are proposed. The former Exochosphaeridium spinosum var. deflandrei is elevated to specific status, as Fibrocysta? deflandrei (Lejeune-Carpentier). The former Hystrichosphaeridium cruciatum is shown to be an acritarch ; the new combination Veryhachium? cruciatum (0. Wetzel) is proposed. Emended diagnoses are presented for these five species and for the following: Gonyaulacysta wetzeli (Lejeune-Carpentier), Gonyaulacysta? obscura (Lejeune-Carpentier), Cribroperidinium ventriosum (0. Wetzel), Leptodinium porosum (Lejeune-Carpentier), Deflandrea galeata (Lejeune-Carpentier) and Lejeunecysta tricuspis (0. Wetzel). Full synonymies are presented for the species Oligosphaeridium complex (White) and Areoligera senonensis Lejeune-Carpentier ; their stratigraphical and geographical distribution is discussed. The taxonomic problems presented by Palaeoperidinium? subconicoides are considered. Photographs of all species are presented, in most cases for the first time ; and interpretative drawings, most of them redrawn versions of the first author's original figures, supplement the text.

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