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Membranilarnacia pellucida
From Fensome et al., 2019:
Membranilarnacia pellucida Yu Jingxian and Zhang Wangping, 1980, p.110, pl.3, figs.14–15. Holotype: Yu Jingxian and Zhang Wangping, 1980, pl.3, fig.14. Age: Cenomanian–early Turonian.
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Original description Yu Jingxian and Zhang Wangping, 1980 [translation Suning Hou, 2025]:
Membranilarnacia pellucida sp. nov.
Holotype: Slide number W3-4(4), Plate III, Figure 14.
Description: The cyst measures 51-59.8 µm in length, with the holotype measuring 59.8 µm, and 51-53 µm in width, with the holotype width being 53 µm. The membrane is 9.2 µm in width. The cyst is nearly round, with a thin, transparent outer membrane that bears many sponge-like small protrusions. The central body is round, enclosed by the outer membrane, with a thick body wall and a granulated surface. The holotype shows an apical archeopyle, approximately 9 µm in length, and triangular in shape.
Comparison: The new species is distinguished by the thin, transparent outer membrane, which has numerous sponge-like small protrusions, setting it apart from other species in the genus.
Stratigraphy: Lower part of the Uytak-Kukbay Formation. 乌依塔克–库克拜下部
Membranilarnacia pellucida Yu Jingxian and Zhang Wangping, 1980, p.110, pl.3, figs.14–15. Holotype: Yu Jingxian and Zhang Wangping, 1980, pl.3, fig.14. Age: Cenomanian–early Turonian.
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Original description Yu Jingxian and Zhang Wangping, 1980 [translation Suning Hou, 2025]:
Membranilarnacia pellucida sp. nov.
Holotype: Slide number W3-4(4), Plate III, Figure 14.
Description: The cyst measures 51-59.8 µm in length, with the holotype measuring 59.8 µm, and 51-53 µm in width, with the holotype width being 53 µm. The membrane is 9.2 µm in width. The cyst is nearly round, with a thin, transparent outer membrane that bears many sponge-like small protrusions. The central body is round, enclosed by the outer membrane, with a thick body wall and a granulated surface. The holotype shows an apical archeopyle, approximately 9 µm in length, and triangular in shape.
Comparison: The new species is distinguished by the thin, transparent outer membrane, which has numerous sponge-like small protrusions, setting it apart from other species in the genus.
Stratigraphy: Lower part of the Uytak-Kukbay Formation. 乌依塔克–库克拜下部