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Manumiella conorata
Manumiella conorata (Stover, 1974) Bujak and Davies, 1983
Originally Deflandrea, subsequently Isabelidinium, thirdly Eurydinium, fourthly (and now) Manumiella. See also Isabelia (combination illegitimate).
Holotypus: Stover, 1974, pl.1, figs.8a-b
Locus typicus: Flounder-3 well, Australia
Stratum typicum: Early-Middle Paleocene
Original diagnosis: Stover, 1974, p.171: Deflandrea conorata
Outline in dorso-ventral view is somewhat lozengeshaped with slightly convex and rounded lateral margins. Apical horn is short, usually blunt, weakly to moderately well developed, not prominent; antapical horns are rounded, fairly well differentiated, and unequal. On some specimens the larger antapical horn is more pointed than the smaller horn. Periphragm is ca. 1 µm thick, faintly and uniformly scabrate to finely granulate. Traces of tabulation on the periphragm are lacking except for the intercalary archeopyle and a poorly defined cingulum indicated by faint, parallel, discontinuous transverse linear markings, ca. 5 µm apart, and located at the widest part of the cysts.
Endoblast is circular to elliptical in dorsoventral view, smooth to faintly scabrate, from less than 1 to 2 µm thick, and commonly folded. The endoblast occupies a major part of the pericoel and the margins of the endophragm do not touch the inner surface of the periphragm laterally. Comparatively small rectangular trapezoidal opercula, with generally rounded corners and apparently hinged antapically, occur on all specimens. Only a few specimens indicate an opening in the endophragm.
Specimens of Deflandrea conorata vary in length (140-162 µm) and width (98-124 µm). Length: width ratio lies between 1:0. 8 and 1:0.7. Endoblast is 92-112 µm long and 85-114 µm wide. The length is greater than the width on some specimens whereas on others the reverse is true; but reliable dimensions of the endoblast are difficult to obtain because of folding. Measurements are of 10 similarly oriented specimens.
Originally Deflandrea, subsequently Isabelidinium, thirdly Eurydinium, fourthly (and now) Manumiella. See also Isabelia (combination illegitimate).
Holotypus: Stover, 1974, pl.1, figs.8a-b
Locus typicus: Flounder-3 well, Australia
Stratum typicum: Early-Middle Paleocene
Original diagnosis: Stover, 1974, p.171: Deflandrea conorata
Outline in dorso-ventral view is somewhat lozengeshaped with slightly convex and rounded lateral margins. Apical horn is short, usually blunt, weakly to moderately well developed, not prominent; antapical horns are rounded, fairly well differentiated, and unequal. On some specimens the larger antapical horn is more pointed than the smaller horn. Periphragm is ca. 1 µm thick, faintly and uniformly scabrate to finely granulate. Traces of tabulation on the periphragm are lacking except for the intercalary archeopyle and a poorly defined cingulum indicated by faint, parallel, discontinuous transverse linear markings, ca. 5 µm apart, and located at the widest part of the cysts.
Endoblast is circular to elliptical in dorsoventral view, smooth to faintly scabrate, from less than 1 to 2 µm thick, and commonly folded. The endoblast occupies a major part of the pericoel and the margins of the endophragm do not touch the inner surface of the periphragm laterally. Comparatively small rectangular trapezoidal opercula, with generally rounded corners and apparently hinged antapically, occur on all specimens. Only a few specimens indicate an opening in the endophragm.
Specimens of Deflandrea conorata vary in length (140-162 µm) and width (98-124 µm). Length: width ratio lies between 1:0. 8 and 1:0.7. Endoblast is 92-112 µm long and 85-114 µm wide. The length is greater than the width on some specimens whereas on others the reverse is true; but reliable dimensions of the endoblast are difficult to obtain because of folding. Measurements are of 10 similarly oriented specimens.