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Andalusiella inflata
From Fensome et al., 2019:
Andalusiella inflata, (Rauscher and Doubinger, 1982, p.104–105, pl.1, figs.13–17) Lentin and Williams, 1985, p.17.
Holotype: Rauscher and Doubinger, 1982, pl.1, figs.13–15.
Originally Svalbardella, subsequently (and now) Andalusiella.
Age: Maastrichtian.
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Original description: [Rauscher and Doubinger, 1982] (translated from French):
Svalbardella inflata n. sp.
Plate I, fig. 13-17
Holotype: Blade 1 1556 1. Collection of the Palynology Laboratory, Institute of Geology, Strasbourg. Coord. England Finder U 374 (plate I, fig. 13-15).
Provenance: Ouled Abdoun Basin, Morocco, test pit SB19, level 40.
Stratigraphic level: Maastrichtian.
Description: The observed forms are elongated (180-220 cm) and are subdivided into three parts: a median part with an apical horn and an antapical horn. The median part has a broadly swollen diamond-shaped outline (85-110 cm). It is formed of two envelopes: the highly granular external periphragm and the endophragm, which constitutes an endocyst sometimes closely attached to the periphragm, or slightly set back. The paracingulum is distinct; a paratabulation is also observed, particularly clearly visible on either side of the cingulum. The archaeopyle is trapezoidal, with the small base directed toward the apex. Only the periphragm extends at both poles to form the two horns with rounded ends, relatively short compared to the total length of the cyst (30-50 t); the apical horn is simple, the antapical horn has a short branch clearly beyond its base.
Frequency: Common species (assemblages II).
Discussion: Several species have already been assigned to the genus Svalbardella, but most of them were subsequently reclassified either in Andalusiella or Palaeocystodinium. Palaeocystodinium is characterized by the absence of paratabulation and the presence of tapered horns. Andalusiella has two antapical horns with a common base. Therefore, the observed material cannot be assigned to either of these two genera.
Among the Svalbardella species, S. cooksoniae MANUM has a more oval central body and more stubby appendages; S. rhomboides BOLTENHAGEN has an outline similar to that of the Moroccan forms, but its dimensions are significantly smaller.
Diagnosis: Proximate cornu- or circumcavate cysts with a lozenge-shaped central body swollen equatorially (L very close to 1) extended by two horns with blunt ends and of approximately equal length (L between 1/4 and 1/2 of the L of the central body), the apical is simple, the antapical bears a short lateral branch. Granular periphragm. Well-marked paracingulum. Clear paratabulation. Intercalated trapezoidal archaeopyle.
Dimensions: Holotype L: 206 μm; 1: 86 μm
Average L: 180-220 μm; 1: 85-110 μm
Andalusiella inflata, (Rauscher and Doubinger, 1982, p.104–105, pl.1, figs.13–17) Lentin and Williams, 1985, p.17.
Holotype: Rauscher and Doubinger, 1982, pl.1, figs.13–15.
Originally Svalbardella, subsequently (and now) Andalusiella.
Age: Maastrichtian.
---------------------------------------------------------------------------------------------------
Original description: [Rauscher and Doubinger, 1982] (translated from French):
Svalbardella inflata n. sp.
Plate I, fig. 13-17
Holotype: Blade 1 1556 1. Collection of the Palynology Laboratory, Institute of Geology, Strasbourg. Coord. England Finder U 374 (plate I, fig. 13-15).
Provenance: Ouled Abdoun Basin, Morocco, test pit SB19, level 40.
Stratigraphic level: Maastrichtian.
Description: The observed forms are elongated (180-220 cm) and are subdivided into three parts: a median part with an apical horn and an antapical horn. The median part has a broadly swollen diamond-shaped outline (85-110 cm). It is formed of two envelopes: the highly granular external periphragm and the endophragm, which constitutes an endocyst sometimes closely attached to the periphragm, or slightly set back. The paracingulum is distinct; a paratabulation is also observed, particularly clearly visible on either side of the cingulum. The archaeopyle is trapezoidal, with the small base directed toward the apex. Only the periphragm extends at both poles to form the two horns with rounded ends, relatively short compared to the total length of the cyst (30-50 t); the apical horn is simple, the antapical horn has a short branch clearly beyond its base.
Frequency: Common species (assemblages II).
Discussion: Several species have already been assigned to the genus Svalbardella, but most of them were subsequently reclassified either in Andalusiella or Palaeocystodinium. Palaeocystodinium is characterized by the absence of paratabulation and the presence of tapered horns. Andalusiella has two antapical horns with a common base. Therefore, the observed material cannot be assigned to either of these two genera.
Among the Svalbardella species, S. cooksoniae MANUM has a more oval central body and more stubby appendages; S. rhomboides BOLTENHAGEN has an outline similar to that of the Moroccan forms, but its dimensions are significantly smaller.
Diagnosis: Proximate cornu- or circumcavate cysts with a lozenge-shaped central body swollen equatorially (L very close to 1) extended by two horns with blunt ends and of approximately equal length (L between 1/4 and 1/2 of the L of the central body), the apical is simple, the antapical bears a short lateral branch. Granular periphragm. Well-marked paracingulum. Clear paratabulation. Intercalated trapezoidal archaeopyle.
Dimensions: Holotype L: 206 μm; 1: 86 μm
Average L: 180-220 μm; 1: 85-110 μm