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Andalusiella acicornuta
From Fensome et al., 2019:
Andalusiella acicornuta, Srivastava, 1995, p.264–265,268, pl.3, figs.1–6.
Holotype: Srivastava, 1995, pl.3, figs.1–2.
Age: Maastrichtian.
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Original Description Srivastava 1995:
Description-Cyst compressed ellipsoidal with a prominent apical horn and two unequal short antapical horns; antapical horns close together near longitudinal axis having a common base and appearing as bifurcated single horn, left antapical horn very shol1 and poorly developed, bases of all other horns closed by thickened plugs, endophragm extending to the tips of the horns; walls proximate, acrocavate, periphragm thinner than endophragm; parasutural features absent, periphragm wrinkled; paracingulum shallow. bordered by faint low folds; paratabulation indicated by archeopyle and a faint paracingulum, no other paratabulation present; archeopyle intercalary, operculum free.
Holotype-PI. 3, figs, 1, 2; photomicrograph reference no. 85036/13, 14; objective x 40; microscope locationhorizontal 37.0/vertical 102.0; size-total length x breadth 182 x 57 f..l.m, body length 113 f..l.m, apical horn length 51 f..l.m, antapical horns length 39 f..l.m and 8 f..l.m; sample no. CRC 32146-1/Slide 6; locality WA18, the Navarro Group, the uppermost Kemp CJay, Falls County, Texas; Late Maastrichtian.
Paratype-Pl. 3, figs 3-4; photomicrography reference no. 85035/24, 25; objective x 40; microscope location-horizontal 40.0/vertical 106.7; size-total length x breadth 143 x 44 f..l.m, body length 91 f..l.m, apical horn length 27 f..l.m, antapical horns length 27 f..l.m and 8 f..l.m; sample no. CRC 32146-1/Slide 1; locality WA18, the Navarro Group, the uppermost Kemp Clay, Falls County. Texas; Late Maastrichtian.
Paratype-PI. 3, fjgs 5, 6; photomicrograph reference no. 85036/18, 19; objective x 40; microscope Jocationhorizontal 45.4/vertical 109.0; size-total length x breadth 161 x 47 f..l.m, body length 89 f..l.m, apical horn length 35 f..l.m, antapical horns length 37 f..l.m and 8 f..l.m; sample no. CRC 32146-1/Slide 7; locality WA18, the Navarro Group, the uppermost Kemp Clay, Falls County, Texas; Late Maastrichtian.
Remarks-Andalusiella acicornuta is distinct from A. mauthei and A poly117OJpha in having thinner spindle shaped
body, longer horns, and lacking granular wall surface. It differs from A. rhombohedra (Benson) Stover & Evitt in horny endophragm extended up to the tips of the horns. Specimens described as Svalbardella australina from Gabon, West Africa (Malloy, 1972), south east Turkey (Erkmen & Sadek, 1981) and Maastrichtian-Paleocene of Argentina (Gamerro & Archangelsky, 1981) are very similar to Andalusiella acicornuta described here.
Name derivation-Latin acus = needle. cornutus = bearing horns; aciconuta = bearing needle-like horns.
Andalusiella acicornuta, Srivastava, 1995, p.264–265,268, pl.3, figs.1–6.
Holotype: Srivastava, 1995, pl.3, figs.1–2.
Age: Maastrichtian.
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Original Description Srivastava 1995:
Description-Cyst compressed ellipsoidal with a prominent apical horn and two unequal short antapical horns; antapical horns close together near longitudinal axis having a common base and appearing as bifurcated single horn, left antapical horn very shol1 and poorly developed, bases of all other horns closed by thickened plugs, endophragm extending to the tips of the horns; walls proximate, acrocavate, periphragm thinner than endophragm; parasutural features absent, periphragm wrinkled; paracingulum shallow. bordered by faint low folds; paratabulation indicated by archeopyle and a faint paracingulum, no other paratabulation present; archeopyle intercalary, operculum free.
Holotype-PI. 3, figs, 1, 2; photomicrograph reference no. 85036/13, 14; objective x 40; microscope locationhorizontal 37.0/vertical 102.0; size-total length x breadth 182 x 57 f..l.m, body length 113 f..l.m, apical horn length 51 f..l.m, antapical horns length 39 f..l.m and 8 f..l.m; sample no. CRC 32146-1/Slide 6; locality WA18, the Navarro Group, the uppermost Kemp CJay, Falls County, Texas; Late Maastrichtian.
Paratype-Pl. 3, figs 3-4; photomicrography reference no. 85035/24, 25; objective x 40; microscope location-horizontal 40.0/vertical 106.7; size-total length x breadth 143 x 44 f..l.m, body length 91 f..l.m, apical horn length 27 f..l.m, antapical horns length 27 f..l.m and 8 f..l.m; sample no. CRC 32146-1/Slide 1; locality WA18, the Navarro Group, the uppermost Kemp Clay, Falls County. Texas; Late Maastrichtian.
Paratype-PI. 3, fjgs 5, 6; photomicrograph reference no. 85036/18, 19; objective x 40; microscope Jocationhorizontal 45.4/vertical 109.0; size-total length x breadth 161 x 47 f..l.m, body length 89 f..l.m, apical horn length 35 f..l.m, antapical horns length 37 f..l.m and 8 f..l.m; sample no. CRC 32146-1/Slide 7; locality WA18, the Navarro Group, the uppermost Kemp Clay, Falls County, Texas; Late Maastrichtian.
Remarks-Andalusiella acicornuta is distinct from A. mauthei and A poly117OJpha in having thinner spindle shaped
body, longer horns, and lacking granular wall surface. It differs from A. rhombohedra (Benson) Stover & Evitt in horny endophragm extended up to the tips of the horns. Specimens described as Svalbardella australina from Gabon, West Africa (Malloy, 1972), south east Turkey (Erkmen & Sadek, 1981) and Maastrichtian-Paleocene of Argentina (Gamerro & Archangelsky, 1981) are very similar to Andalusiella acicornuta described here.
Name derivation-Latin acus = needle. cornutus = bearing horns; aciconuta = bearing needle-like horns.