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Dinopterygium fehmarnense
Dinopterygium fehmarnense (Lentin and Williams, 1973) Stover and Evitt, 1978
Name not validly published: no holotype designated. NOW Heteraulacacysta. Originally Heteraulacacysta (name not validly published), subsequently Dinopterygium (name not validly published), thirdly (and now) Heteraulacacysta.
Holotype: Morgenroth, 1966, pl.2, figs.7-8
Age: Early Eocene
REMARKS: Morgenroth 1966a, p. 6-7: Goniodoma polyedricum (Pouchet) Jorgensen
In the Lower Eocene of Fehmarn one finds a number of dinoflagellates that previously were only known from the recent and are placed in the genus Goniodoma. There are no differences from the recent species Goniodoma polyedricum (Pouchet) Jorgensen. The form and order of the plates are the same. Also, the plates are perforated by small pores. The epitheca possesses three pentagonal, approximately equal apical Plates and five trapezoid Pre-equatorlal plates which are interrupted ventrally by a pair of adjacent elongate plates on the longitudinal furrow. The strongly pronounced girdle runs in a sinistral direction. The hypotheca possesses five trapezoid postequatorial plates interrupted by the elongate longitudinal furrow plates. At the antapical pole there are three polygonal plates of which the two ventrals are relatively small compared to the dorsal plate. The recent specimens of the species are present in the subtropical Atlantic region, but they are more common in the Red Sea and the Indian Ocean.
MEASUREMENTS: Length of specimen-74 microns (62/84 microns), Breadth of specimen-72 microns (62/78 microns) (20 measurements). Number of specimens examined - 44.
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Lentin and Williams 1973, p. 67-68.
Heteraulacacysta fehmarnensis sp. nov. Lentin and Williams 1973
Description & Holotype. Morgenroth, 1966a, p.7, pl.2, fig.7-8; Early Eocene.
Morgenroth, 1966a, included this species in Goniodoma polyedricum which is a modern form. Eisenack and Kjellstrom, 1971a, p.445, transferred G. polyedricum to the fossil genus Heteraulacacysta including all modern forms and Morgenroth"s fossil forms. This transfer is herein rejected on the basis that Heteraulacacysta is a fossil genus and the new species H. fehrmarnensis is erected for fossil forms whixh resemble Goniodoma polyedricum.
Name not validly published: no holotype designated. NOW Heteraulacacysta. Originally Heteraulacacysta (name not validly published), subsequently Dinopterygium (name not validly published), thirdly (and now) Heteraulacacysta.
Holotype: Morgenroth, 1966, pl.2, figs.7-8
Age: Early Eocene
REMARKS: Morgenroth 1966a, p. 6-7: Goniodoma polyedricum (Pouchet) Jorgensen
In the Lower Eocene of Fehmarn one finds a number of dinoflagellates that previously were only known from the recent and are placed in the genus Goniodoma. There are no differences from the recent species Goniodoma polyedricum (Pouchet) Jorgensen. The form and order of the plates are the same. Also, the plates are perforated by small pores. The epitheca possesses three pentagonal, approximately equal apical Plates and five trapezoid Pre-equatorlal plates which are interrupted ventrally by a pair of adjacent elongate plates on the longitudinal furrow. The strongly pronounced girdle runs in a sinistral direction. The hypotheca possesses five trapezoid postequatorial plates interrupted by the elongate longitudinal furrow plates. At the antapical pole there are three polygonal plates of which the two ventrals are relatively small compared to the dorsal plate. The recent specimens of the species are present in the subtropical Atlantic region, but they are more common in the Red Sea and the Indian Ocean.
MEASUREMENTS: Length of specimen-74 microns (62/84 microns), Breadth of specimen-72 microns (62/78 microns) (20 measurements). Number of specimens examined - 44.
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Lentin and Williams 1973, p. 67-68.
Heteraulacacysta fehmarnensis sp. nov. Lentin and Williams 1973
Description & Holotype. Morgenroth, 1966a, p.7, pl.2, fig.7-8; Early Eocene.
Morgenroth, 1966a, included this species in Goniodoma polyedricum which is a modern form. Eisenack and Kjellstrom, 1971a, p.445, transferred G. polyedricum to the fossil genus Heteraulacacysta including all modern forms and Morgenroth"s fossil forms. This transfer is herein rejected on the basis that Heteraulacacysta is a fossil genus and the new species H. fehrmarnensis is erected for fossil forms whixh resemble Goniodoma polyedricum.