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Deflandrea albertii
Deflandrea albertii Corradini, 1973
Now Cerodinium. Originally Deflandrea, subsequently Senegalinium, thirdly (and now) Cerodinium. See also Ceratiopsis (combination illegitimate).
Tax. synonym of Phelodinium tricuspe ssp. divaricans (O. Wetzel, 1933) Lentin and Williams, 1985, according to Sarjeant, 1985. Cerodinium albertii has priority at the species rank.
Holotype: Corradini, 1973, pl.27, figs.7a-b
Paratype: Corradini, 1973
Locus typicus: Viano, Reggio Emilia, Italy
Stratum typicum: Late Cretaceous-Paleocene
Original diagnosis: Corradini, 1973, p. 174
Dinoflagellate cyst subpentagonal in outline with smooth, thick-walled inner body and striate-punctated periphragm. One apical and two antapical horns, well developed. Inner capsule subcircular in outline pericoel antapical. Cingulum well defined sulcus broad. Archeopyle intercalary.
Dimensions--Holotype: diameter of the inner body 80x75 Ám, width of the cyst 95 Ám, total length 190 Ám, dimensions of the archeopyle 40x23 Ám. Range: diameter of the inner body 55-(64)-80 Ám, width of the cyst 68-(80)-100 Ám, total length 140-(160)-190 Ám.
Original description: Corradini, 1973, p. 175
The test is flattened dorsoventrally, showing the periphragm with a subpentagonal outline. Epitractal sides usually convex, hypotractal ones straight or concave.
Apical and antapical horns tapering gradually from the bases to the apex, the former distally blunted, the latter normally acuminate. The length of the horns is approximately equal. The antapical horns are well separated, their axes being straight or slightly diverging. The inner capsule, smooth or slightly granular, is closely appressed to the periphragm of the epitract, except at the horn. On the contrary a well-developed pericoel is usually present on the lower part of the hypotract and the inner body is not in contact with the lateral walls of the test.
The cingulum is well defined being delineated by two low, finelv ondulose ridges, and is only sligktly helicoidal. A wide, longitudinal furrow is normally observable, restricted to the hypotract. A sinuous impression, suggesting a poreflagellar mark, is sometimes present on the middle of the sulcus. The intercalary archeopyle is normally wide and polygonal in shape.
Now Cerodinium. Originally Deflandrea, subsequently Senegalinium, thirdly (and now) Cerodinium. See also Ceratiopsis (combination illegitimate).
Tax. synonym of Phelodinium tricuspe ssp. divaricans (O. Wetzel, 1933) Lentin and Williams, 1985, according to Sarjeant, 1985. Cerodinium albertii has priority at the species rank.
Holotype: Corradini, 1973, pl.27, figs.7a-b
Paratype: Corradini, 1973
Locus typicus: Viano, Reggio Emilia, Italy
Stratum typicum: Late Cretaceous-Paleocene
Original diagnosis: Corradini, 1973, p. 174
Dinoflagellate cyst subpentagonal in outline with smooth, thick-walled inner body and striate-punctated periphragm. One apical and two antapical horns, well developed. Inner capsule subcircular in outline pericoel antapical. Cingulum well defined sulcus broad. Archeopyle intercalary.
Dimensions--Holotype: diameter of the inner body 80x75 Ám, width of the cyst 95 Ám, total length 190 Ám, dimensions of the archeopyle 40x23 Ám. Range: diameter of the inner body 55-(64)-80 Ám, width of the cyst 68-(80)-100 Ám, total length 140-(160)-190 Ám.
Original description: Corradini, 1973, p. 175
The test is flattened dorsoventrally, showing the periphragm with a subpentagonal outline. Epitractal sides usually convex, hypotractal ones straight or concave.
Apical and antapical horns tapering gradually from the bases to the apex, the former distally blunted, the latter normally acuminate. The length of the horns is approximately equal. The antapical horns are well separated, their axes being straight or slightly diverging. The inner capsule, smooth or slightly granular, is closely appressed to the periphragm of the epitract, except at the horn. On the contrary a well-developed pericoel is usually present on the lower part of the hypotract and the inner body is not in contact with the lateral walls of the test.
The cingulum is well defined being delineated by two low, finelv ondulose ridges, and is only sligktly helicoidal. A wide, longitudinal furrow is normally observable, restricted to the hypotract. A sinuous impression, suggesting a poreflagellar mark, is sometimes present on the middle of the sulcus. The intercalary archeopyle is normally wide and polygonal in shape.