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Cordosphaeridium furcans
Cordosphaeridium furcans, He Chengquan, 1991
Holotype: He Chengquan, 1991, pl.51, fig.13
Location and stratigraphy: Wuqia County Basebulak; Qimugen fm lower member near the bottom.
Age: Paleocene
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Original description: [He Chengquan, 1991]: (translated by Suning Hou, 07-01-2019):
Description:
The body is nearly circular.
Wall thin, thickness 1-1.3μm, the inner wall thicker, dense and smooth, outer layer thin, fibrous fine reticular.
There are about 30 long processes, formed by the outer wall, except for a wide one, the rest are basically the same size, 17-26 μm long, central width 3-5 μm, but the morphology is variable, mainly trumpet and bifurcated two categories, there are a few linear processes (ends simple or picker-shaped bifurcation); The wall of the process generally smooth, process distally expanded, many processes branching at 1/2-2/3 of its length, with 2-4 anchor-shaped branches, the end of the branches is bifurcated; Among the trumpet processes, some ends have finger-like tiny processes (usually 6, 3-3.5 μm long, end micro-bifurcated), some ends look like ribs or intact. A prominent wide process may be the antapical process, more or less trumpet-shaped, about 30 μm long, the central 10 μm wide, the end 25 μm wide, its wall weak reticular, the terminal edge is complete and flips backward forming a anchor shape. Process intratabular.
The archeopyle outline is not clear, it is likely precingular.
Dimensions:
The total diameter 125-130 μm, the body diameter 72-80 μm (measured 2 ), the total diameter of the holotype 130 μm, the body diameter 80 μm.
Affinities:
This species differs from Cordosphaeridium (C.) Gracile, C. (C.) digitiforme in the thin wall, many processes with 2-3 branches distally.
Holotype: He Chengquan, 1991, pl.51, fig.13
Location and stratigraphy: Wuqia County Basebulak; Qimugen fm lower member near the bottom.
Age: Paleocene
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Original description: [He Chengquan, 1991]: (translated by Suning Hou, 07-01-2019):
Description:
The body is nearly circular.
Wall thin, thickness 1-1.3μm, the inner wall thicker, dense and smooth, outer layer thin, fibrous fine reticular.
There are about 30 long processes, formed by the outer wall, except for a wide one, the rest are basically the same size, 17-26 μm long, central width 3-5 μm, but the morphology is variable, mainly trumpet and bifurcated two categories, there are a few linear processes (ends simple or picker-shaped bifurcation); The wall of the process generally smooth, process distally expanded, many processes branching at 1/2-2/3 of its length, with 2-4 anchor-shaped branches, the end of the branches is bifurcated; Among the trumpet processes, some ends have finger-like tiny processes (usually 6, 3-3.5 μm long, end micro-bifurcated), some ends look like ribs or intact. A prominent wide process may be the antapical process, more or less trumpet-shaped, about 30 μm long, the central 10 μm wide, the end 25 μm wide, its wall weak reticular, the terminal edge is complete and flips backward forming a anchor shape. Process intratabular.
The archeopyle outline is not clear, it is likely precingular.
Dimensions:
The total diameter 125-130 μm, the body diameter 72-80 μm (measured 2 ), the total diameter of the holotype 130 μm, the body diameter 80 μm.
Affinities:
This species differs from Cordosphaeridium (C.) Gracile, C. (C.) digitiforme in the thin wall, many processes with 2-3 branches distally.