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Deflandrea sergipensis
Deflandrea sergipensis Herngreen, 1975
Now Senegalinium. Originally Deflandrea, subsequently (and now) Senegalinium.
Holotype: Herngreen, 1975, pl.3, figs.14-15
Locus typicus: Sergipe, Brasil
Stratum typicum: Late Senonian
Original description: Herngreen, 1975, p. 61
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 108Á, equatorial width 80Á. Endophragm 84x74 Ám, apical horn: height 13 Ám, width 12 Ám.
Dimensions: Four other specimens 72x66 Ám, 89x68 Ám, 92x64 Ám and I00x88 Ám. Apical horn about 9-12x8-13 Ám.
Affinities:
Herngreen, 1975, p. 62: 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.
Now Senegalinium. Originally Deflandrea, subsequently (and now) Senegalinium.
Holotype: Herngreen, 1975, pl.3, figs.14-15
Locus typicus: Sergipe, Brasil
Stratum typicum: Late Senonian
Original description: Herngreen, 1975, p. 61
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 108Á, equatorial width 80Á. Endophragm 84x74 Ám, apical horn: height 13 Ám, width 12 Ám.
Dimensions: Four other specimens 72x66 Ám, 89x68 Ám, 92x64 Ám and I00x88 Ám. Apical horn about 9-12x8-13 Ám.
Affinities:
Herngreen, 1975, p. 62: 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.