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Batiacasphaera hystricosa
Batiacasphaera hystricosa, Mao Shaozhi and Norris, 1988
Holotype: Mao Shaozhi and Norris, 1988, pl.8, fig.18
Locus typicus: Wulagen Formation, Wuluokeqiate section
Stratum typicum: Late Eocene
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Original description: [Mao Shaozhi and Norris, 1988, p. 40]:
Diagnosis:
Cyst proximate, subspherical to oval. Autophragm thin, granulate-microreticulate, ornamented with sparsely distributed spines.
Archeopyle apical, type (tA); operculum free. Accessory archeopyle sutures indicating six precingular plates.
Description:
Autophragm thin (about 0.5 to 1 µm thick), densely covered by coarse granules often fused, forming an irregular microreticulum with relatively small lumina and broad muri. A number of adjacent granules also fused proximally, forming typically broadly based thorn-like spines, usually about 2 µm high, 2 to 3 µm wide at their bases, and spaced 4 to 10 µm apart. Cyst outline modified by scattered larger spines, whereas anterior outline of precingular plate is delicately spinose between larger spines. Delicate spines probably represent muri of microreticulum.
Dimensions:
Width 45 to 85 µm (holotype 58 µm).
Affinities:
Mao Shaozhi and Norris, 1988, p. 40: Batiacasphaera hystrieosa differs from other species of this genus in having a distinctive granulate-microreticulate autophragm ornamented with sparsely distributed spines.
Holotype: Mao Shaozhi and Norris, 1988, pl.8, fig.18
Locus typicus: Wulagen Formation, Wuluokeqiate section
Stratum typicum: Late Eocene
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Original description: [Mao Shaozhi and Norris, 1988, p. 40]:
Diagnosis:
Cyst proximate, subspherical to oval. Autophragm thin, granulate-microreticulate, ornamented with sparsely distributed spines.
Archeopyle apical, type (tA); operculum free. Accessory archeopyle sutures indicating six precingular plates.
Description:
Autophragm thin (about 0.5 to 1 µm thick), densely covered by coarse granules often fused, forming an irregular microreticulum with relatively small lumina and broad muri. A number of adjacent granules also fused proximally, forming typically broadly based thorn-like spines, usually about 2 µm high, 2 to 3 µm wide at their bases, and spaced 4 to 10 µm apart. Cyst outline modified by scattered larger spines, whereas anterior outline of precingular plate is delicately spinose between larger spines. Delicate spines probably represent muri of microreticulum.
Dimensions:
Width 45 to 85 µm (holotype 58 µm).
Affinities:
Mao Shaozhi and Norris, 1988, p. 40: Batiacasphaera hystrieosa differs from other species of this genus in having a distinctive granulate-microreticulate autophragm ornamented with sparsely distributed spines.