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Deflandrea andromiensis
Deflandrea andromiensis Vozzhennikova, 1967
Holotype: Vozzhennikova, 1967, pl.71, fig.3; Lentin and Vozzhennikova, 1990, pl.5, fig.7, text-fig.22
Locus typicus: Western Siberia (Tomsk region), Russia
Stratum typicum: Eocene
Translation Vozzhennikova, 1967: Lentin and Vozzhennikova, 1990
Original description: Vozzhennikova, 1967, p.142-143
Theca pentagonal with a round internal body which occupies all of the convex, middle portion of the theca. Epitheca larger than hypotheca with rounded lateral walls. These walls do not come into contact with the internal body but are separated from it by a considerable distance. Apical horn conical, blunt at the tip. Hypotheca trapeziform with straight or slightly concave lateral walls and a transverse furrow which is almost parallel with the antapical margin. The two short conical antapical horns are situated at some distance from each other and are slightly divergent. The lateral walls of the theca bear small blunt outgrowths with a shallow depression for the transverse furrow. The latter is annulate, equatorial and from its ends runs the longitudinal furrow towards the antapical end. The surface of the theca is smooth or finely granular and is sometimes covered with a few small spines, particularly noticeable on the margins of the theca. The sculpturing to the internal body is often coarsely granular. Pylome trapeziform.
Expanded description: Lentin and Vozzhennikova, 1990, p. 49
Cyst outline peridinioid with a moderate apical horn and a convex pericingular region; antapex with two, more or less equal, sharply conical antapical horns, with the left antapical horn sometimes more developed; endocyst round in outline, dividing the cyst equally; circumcavate. Perlphragm smooth to minutely granulose with rare, small intratabular spines; endophragm coarsely granulose.
Paratabulation indicated by periarcheopyle and paracingulum, peridinioid. The periarcheopyle is broad hexa (latideltaform), operculum free; the endoarcheopyle is also broad hexa or undeveloped. The paracingulum is outlined by parallel ridges. Parasulcus indicated by a depression on the hypocyst.
Size: Holotype, length 135 µm, width 86 µm, width of paracingulum about 8 µm; endocyst, length 73 µm, width 62 µm. Range, length 135-148 µm, width 86-92 µm, width of paracingulum 8-10 µm; endocyst, length 65-73 µm, width 62-76 µm.
Holotype: Vozzhennikova, 1967, pl.71, fig.3; Lentin and Vozzhennikova, 1990, pl.5, fig.7, text-fig.22
Locus typicus: Western Siberia (Tomsk region), Russia
Stratum typicum: Eocene
Translation Vozzhennikova, 1967: Lentin and Vozzhennikova, 1990
Original description: Vozzhennikova, 1967, p.142-143
Theca pentagonal with a round internal body which occupies all of the convex, middle portion of the theca. Epitheca larger than hypotheca with rounded lateral walls. These walls do not come into contact with the internal body but are separated from it by a considerable distance. Apical horn conical, blunt at the tip. Hypotheca trapeziform with straight or slightly concave lateral walls and a transverse furrow which is almost parallel with the antapical margin. The two short conical antapical horns are situated at some distance from each other and are slightly divergent. The lateral walls of the theca bear small blunt outgrowths with a shallow depression for the transverse furrow. The latter is annulate, equatorial and from its ends runs the longitudinal furrow towards the antapical end. The surface of the theca is smooth or finely granular and is sometimes covered with a few small spines, particularly noticeable on the margins of the theca. The sculpturing to the internal body is often coarsely granular. Pylome trapeziform.
Expanded description: Lentin and Vozzhennikova, 1990, p. 49
Cyst outline peridinioid with a moderate apical horn and a convex pericingular region; antapex with two, more or less equal, sharply conical antapical horns, with the left antapical horn sometimes more developed; endocyst round in outline, dividing the cyst equally; circumcavate. Perlphragm smooth to minutely granulose with rare, small intratabular spines; endophragm coarsely granulose.
Paratabulation indicated by periarcheopyle and paracingulum, peridinioid. The periarcheopyle is broad hexa (latideltaform), operculum free; the endoarcheopyle is also broad hexa or undeveloped. The paracingulum is outlined by parallel ridges. Parasulcus indicated by a depression on the hypocyst.
Size: Holotype, length 135 µm, width 86 µm, width of paracingulum about 8 µm; endocyst, length 73 µm, width 62 µm. Range, length 135-148 µm, width 86-92 µm, width of paracingulum 8-10 µm; endocyst, length 65-73 µm, width 62-76 µm.