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Carpatella humera
Carpatella humera, He Chengquan, 1991
Holotype: He Chengquan, 1991, pl.7, fig.10
Location and stratigraphy: Wuqia County Basebulak; Qimugen fm lower member.
Age: Paleocene
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Original description: [He Chengquan, 1991]: (translated by Suning Hou, 07-01-2019):
Description:
The outline is nearly circular, Epicyst and hypocyst are nearly equal. With a short top, tail angle, usually a little longer than the tail angle vertex, cylindrical, length 6 a 7. 5μm, width 5μm;
Antapical horn nearly cylindrical, slightly curved, the terminal narrow and round 4.5-7.5 μm long, base width about 5 μm. There is a short conical or conical tumor process around the sides of apical and antapical horn, the size can be variable, length 2.5-3μm; There is a similar process at the sides of the waist, these convex (process) are likely to be located at the corner of the plates. There are 6 in total on the outline of the cyst (apical and antapical not included).
Cingulum at equatorial position, obvious, ring, narrow, 4μm wide, the edge is marked by the fine ridges.
Cyst wall thickness 1 μm, single wall, surface densely granular. With obscure plates, the boundary is marked by two parallel pandasutural fine ridges (concomitant with thickening of the cyst wall); Pandasutural region is dark brown plate, width 2μm;
tabulation is likely similar to the genus, roughly represented as x', 6", xc, 5-6"', 1"".
The archeopyle precingular, the outline of horseshoe-shaped, P-type, formed by the movement of the third precingular plate (3’’). The operculum is preserved in situ.
Dimension:
Cyst length 82.5-83 μm, width 77-80 μm (measured 2); the holotype length 83 μm, width 80 μm, apical horn length 6 μm, antapical length 4.5 μm, cingulum width 4 μm.
Comparison: This new species is similar to Carpatella cornuta which originated from the Soviet Union Karpaty mountains, Paleocene, but the individuals of the former are small, with an obvious short process (convex) around the sides of the apical and antapical horns respectively; It is distinctively different from C. nuda (De Coninck, 1969) (comb. Nov.) in dense granular surface rather than smooth and the angular processes on the contour.
Holotype: He Chengquan, 1991, pl.7, fig.10
Location and stratigraphy: Wuqia County Basebulak; Qimugen fm lower member.
Age: Paleocene
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Original description: [He Chengquan, 1991]: (translated by Suning Hou, 07-01-2019):
Description:
The outline is nearly circular, Epicyst and hypocyst are nearly equal. With a short top, tail angle, usually a little longer than the tail angle vertex, cylindrical, length 6 a 7. 5μm, width 5μm;
Antapical horn nearly cylindrical, slightly curved, the terminal narrow and round 4.5-7.5 μm long, base width about 5 μm. There is a short conical or conical tumor process around the sides of apical and antapical horn, the size can be variable, length 2.5-3μm; There is a similar process at the sides of the waist, these convex (process) are likely to be located at the corner of the plates. There are 6 in total on the outline of the cyst (apical and antapical not included).
Cingulum at equatorial position, obvious, ring, narrow, 4μm wide, the edge is marked by the fine ridges.
Cyst wall thickness 1 μm, single wall, surface densely granular. With obscure plates, the boundary is marked by two parallel pandasutural fine ridges (concomitant with thickening of the cyst wall); Pandasutural region is dark brown plate, width 2μm;
tabulation is likely similar to the genus, roughly represented as x', 6", xc, 5-6"', 1"".
The archeopyle precingular, the outline of horseshoe-shaped, P-type, formed by the movement of the third precingular plate (3’’). The operculum is preserved in situ.
Dimension:
Cyst length 82.5-83 μm, width 77-80 μm (measured 2); the holotype length 83 μm, width 80 μm, apical horn length 6 μm, antapical length 4.5 μm, cingulum width 4 μm.
Comparison: This new species is similar to Carpatella cornuta which originated from the Soviet Union Karpaty mountains, Paleocene, but the individuals of the former are small, with an obvious short process (convex) around the sides of the apical and antapical horns respectively; It is distinctively different from C. nuda (De Coninck, 1969) (comb. Nov.) in dense granular surface rather than smooth and the angular processes on the contour.