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Sentusidinium stipulatum
Sentusidinium stipulatum Mao Shaozhi and Norris, 1988
Holotype: Mao Shaozhi and Norris, 1988, pl.8, fig.22
Locus typicus: Tarim Basin, Xingjiang Province, China
Stratum typicum: Late Eocene-early Oligocene
Original diagnosis: Mao Shaozhi and Norris, 1988, p.40
Cyst proximate to proximochorate, subspherical to transversely ellipsoidal. Apex rounded or slightly protruding; antapex typically rounded. Autophragm characterized by ornament comprising a mixture of low to medium elements: granules, short spines, and short and fine processes on individual specimens. Archeopyle apical, type (tA). Archeopyle suture zigzag, indicating six precingular plates; operculum free or dislodged.
Original description: Mao Shaozhi and Norris, 1988, p.40-41
Autophragm covered by nontabular low- to medium relief granules, spines, and pointed processes. Granules fine to coarse, evenly distributed on surface. Spines short and pointed, evenly or unevenly located, their proximal bases wider than their heights. Processes short and fine, usually 1 to 4 µm long, rarely 10 µm or more, sparsely and unevenly distributed, normally delicate and flexible, tending to lie down on surface. Process tips usually simple and blunt, seldom expanded, bifurcate or trifurcate distally.
Dimensions: Width of cysts 49 to 82 µm; 20 specimens measured.
Holotype: Mao Shaozhi and Norris, 1988, pl.8, fig.22
Locus typicus: Tarim Basin, Xingjiang Province, China
Stratum typicum: Late Eocene-early Oligocene
Original diagnosis: Mao Shaozhi and Norris, 1988, p.40
Cyst proximate to proximochorate, subspherical to transversely ellipsoidal. Apex rounded or slightly protruding; antapex typically rounded. Autophragm characterized by ornament comprising a mixture of low to medium elements: granules, short spines, and short and fine processes on individual specimens. Archeopyle apical, type (tA). Archeopyle suture zigzag, indicating six precingular plates; operculum free or dislodged.
Original description: Mao Shaozhi and Norris, 1988, p.40-41
Autophragm covered by nontabular low- to medium relief granules, spines, and pointed processes. Granules fine to coarse, evenly distributed on surface. Spines short and pointed, evenly or unevenly located, their proximal bases wider than their heights. Processes short and fine, usually 1 to 4 µm long, rarely 10 µm or more, sparsely and unevenly distributed, normally delicate and flexible, tending to lie down on surface. Process tips usually simple and blunt, seldom expanded, bifurcate or trifurcate distally.
Dimensions: Width of cysts 49 to 82 µm; 20 specimens measured.