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Senegalinium sergipense
Senegalinium sergipense (Herngreen, 1975) Lentin and Williams, 1980
Originally Deflandrea, subsequently (and now) Senegalinium.
Holotype: Herngreen, 1975, pl.3, figs.14-16
Locus typicus: Sergipe, Brasil
Stratum typicum: Senonian
Original description: Herngreen, 1975, p. 61: Deflandrea sergipensis
Outer cyst irregular subglobose to pentagonal in outline. Periphragm in close contact with the endophragm but always clearly separated from it. Apical horn occasionally bulbous, at the base tapering into a conus. Two antapical horns which are equal in size. Thickenings in the endophragm are usually present at the bases of the horns. Endophragm smooth, periphragm scabrate to verrucate in some specimens more or less baculate or echinate. Presence of either a girdle or tabulation not clear; transverse folds are common. In some specimens an indistinct pentagonal archaeopyle occurs.
Holotype: Overall length 108 µm, equatorial width 80 µm. Endophragm 84 X 74 µm, apical horn: height 13 µm, width 12 µm.
Dimensions: Four other specimens 72 X 66 µm, 89 X 68 µm, 92 X 64 µm and I00 X 88 µm. Apical horn about 9-12 X 8-13 µm.
Affinities:
Herngreen, 1975, p. 62: Deflandrea sergipensis
Deflandrea sergipensis is distinctly different from the species included to date in the genus. The inner cyst filling almost the entire periphragm, the absence of a girdle and a tabulation and the presence of a scabrate-verrucate ornamentation set it apart. The types Senegalinium sp. A and B of Jain and Millepied (1973) show some resemblance with D. sergipensis. However, Senegalinium sp. A has e.g. slight longitudinal striations and the B-form possesses antapical horns which are unequal in size. Deflandrea sp. C in Drugg (1967), recorded from the Danian of California, it almost similar to D. sergipensis but differs from it by a more distinct girdle and a longitudinal furrow.
Originally Deflandrea, subsequently (and now) Senegalinium.
Holotype: Herngreen, 1975, pl.3, figs.14-16
Locus typicus: Sergipe, Brasil
Stratum typicum: Senonian
Original description: Herngreen, 1975, p. 61: Deflandrea sergipensis
Outer cyst irregular subglobose to pentagonal in outline. Periphragm in close contact with the endophragm but always clearly separated from it. Apical horn occasionally bulbous, at the base tapering into a conus. Two antapical horns which are equal in size. Thickenings in the endophragm are usually present at the bases of the horns. Endophragm smooth, periphragm scabrate to verrucate in some specimens more or less baculate or echinate. Presence of either a girdle or tabulation not clear; transverse folds are common. In some specimens an indistinct pentagonal archaeopyle occurs.
Holotype: Overall length 108 µm, equatorial width 80 µm. Endophragm 84 X 74 µm, apical horn: height 13 µm, width 12 µm.
Dimensions: Four other specimens 72 X 66 µm, 89 X 68 µm, 92 X 64 µm and I00 X 88 µm. Apical horn about 9-12 X 8-13 µm.
Affinities:
Herngreen, 1975, p. 62: Deflandrea sergipensis
Deflandrea sergipensis is distinctly different from the species included to date in the genus. The inner cyst filling almost the entire periphragm, the absence of a girdle and a tabulation and the presence of a scabrate-verrucate ornamentation set it apart. The types Senegalinium sp. A and B of Jain and Millepied (1973) show some resemblance with D. sergipensis. However, Senegalinium sp. A has e.g. slight longitudinal striations and the B-form possesses antapical horns which are unequal in size. Deflandrea sp. C in Drugg (1967), recorded from the Danian of California, it almost similar to D. sergipensis but differs from it by a more distinct girdle and a longitudinal furrow.