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Tuberculodinium sp. of chateauneuf 1980
Tuberculodinium sp. of Chateauneuf 1980
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Genus: Tuberculodinium Wall, 1967
Type species: Tuberculodinium vancampoae (Rossignol, 1962); Wall, 1967
Original description: Wall, 1967, p. 114
Test discoidal, with two wall layers, the outer supported above the inner by numerous short, stout, tuberculate projections. Dorsal surface with a large compound archeopyle which probably corresponds to a combination of precingular and intercalary plates.
Supplemental description: Wall and Dale, 1971, p. 235
Cysts oblate discoidal, with conspicuous tubercules between 2 separate wall layers.Tubercules arranged in 4 sub-parallel rows (apical, precingular, postcingular and antapical), ca. 29-36 in number. Archeopyle hypotractal, its plate equivalence probably with antapical plates 3-7"""" in the theca, compound, with 3"5 subrectangular operculae.
Stover and Evitt, 1978, p. 240
Synopsis: Cysts oblate, subspherical, composed of an autophragm with numerous (up to 36) intratabular pillarlike or barrel-shaped structures supporting an enclosing ectophragm; intratabular features arranged in latitudinal rows and absent in equatorial area; archeopyle antapical, compound, involving two or three paraplates.
Modified description: Shape: Oblate, subspherical; specimens seen most frequently in apical-antapical view.
Wall relationships: Autophragm and ectophragm separated with intervening ectocoel occupied by intratabular features.
Wall features: No parasutural features. Intratabular features pillarlike, barrel-to dumbbell-shaped, and arranged in latitudinal rows; ectophragm and autophragm generally smooth or faintly ornamented, the latter perhaps coarsely granulate antapically.
Paratabulation: Indicated by intratabular features and byarcheopyle; formula: 5 - (7) -8", 8 - (10) -13", 6 - (10) -13""", 3 - (8) -11"""" .
Archeopyle: Antapical, compound; outline polygonal with one long and two short straight margins and a zigzag fourth margin; operculum free, composed of two or three paraplates, which are smooth or coarsely granulate.
Paracingulum: Indicated by the absence of intratabular features.
Parasulcus: Not indicated.
Size: Intermediate to large.
Affinities:
Stover and Evitt, 1978, p. 240: Tuberculodinium is the only dinoflagellate cyst with a confirmed antapical archeopyle.
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Genus: Tuberculodinium Wall, 1967
Type species: Tuberculodinium vancampoae (Rossignol, 1962); Wall, 1967
Original description: Wall, 1967, p. 114
Test discoidal, with two wall layers, the outer supported above the inner by numerous short, stout, tuberculate projections. Dorsal surface with a large compound archeopyle which probably corresponds to a combination of precingular and intercalary plates.
Supplemental description: Wall and Dale, 1971, p. 235
Cysts oblate discoidal, with conspicuous tubercules between 2 separate wall layers.Tubercules arranged in 4 sub-parallel rows (apical, precingular, postcingular and antapical), ca. 29-36 in number. Archeopyle hypotractal, its plate equivalence probably with antapical plates 3-7"""" in the theca, compound, with 3"5 subrectangular operculae.
Stover and Evitt, 1978, p. 240
Synopsis: Cysts oblate, subspherical, composed of an autophragm with numerous (up to 36) intratabular pillarlike or barrel-shaped structures supporting an enclosing ectophragm; intratabular features arranged in latitudinal rows and absent in equatorial area; archeopyle antapical, compound, involving two or three paraplates.
Modified description: Shape: Oblate, subspherical; specimens seen most frequently in apical-antapical view.
Wall relationships: Autophragm and ectophragm separated with intervening ectocoel occupied by intratabular features.
Wall features: No parasutural features. Intratabular features pillarlike, barrel-to dumbbell-shaped, and arranged in latitudinal rows; ectophragm and autophragm generally smooth or faintly ornamented, the latter perhaps coarsely granulate antapically.
Paratabulation: Indicated by intratabular features and byarcheopyle; formula: 5 - (7) -8", 8 - (10) -13", 6 - (10) -13""", 3 - (8) -11"""" .
Archeopyle: Antapical, compound; outline polygonal with one long and two short straight margins and a zigzag fourth margin; operculum free, composed of two or three paraplates, which are smooth or coarsely granulate.
Paracingulum: Indicated by the absence of intratabular features.
Parasulcus: Not indicated.
Size: Intermediate to large.
Affinities:
Stover and Evitt, 1978, p. 240: Tuberculodinium is the only dinoflagellate cyst with a confirmed antapical archeopyle.