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Wilsonidium tuberosuturatum
From Fensome et al., 2019:
Wilsonidium "tuberosuturatum" He Chengquan, 1991, p.103, pl.37, figs.7–8.
Holotype: He Chengquan, 1991, pl.37, fig.8.
Now Castellodinium? Originally Wilsonidium, subsequently (and now) Castellodinium?
Age: middle Eocene.
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Description from He Chengquan, 1991, translated by Suning Hou, 07-01-2019
Description: The cyst is dorsal-ventral flattened, contoured kite-shaped or elongated pentagon, length slightly larger than width or nearly equal. It has a developed apical horn, length 20-25μm, the top has coarse particles or spines; There are two unequal antapical horns at the antapex, the left antapical horn is larger, length 30-37μm, the right is 20μm long, they taper distally, the end is rod-shaped; The lateral horns are strongly developed, length 25-27.5μm, the end concave and with significant short rod tumors. The cingulum is marked by the rows of nodules transversely distributed in the equatorial regions and grooves on both lateral horns. The outer wall surface has some short rods, 1-2 μm in length and 1-1.5 μm in diameter, the tumors are likely to be distributed along the plates and the seams between the plates, and sometimes they are mostly concentrated in the cingulum zone and especially noticeable at lateral horns, and sometimes they are more common on local contour, the distribution of the tumors showing some parts, but the detailed tabulation is undetermined. The outline of the inner body is round-square, length is nearly equal to width or slightly larger, slightly convex into the lateral horns; It is generally clearly separated from the outer wall, the lateral external cavity is 0-3μm wide. Archeopyle intercalary, round trapezoid, length larger than width. The operculum is completely separated, fell off or in situ preserved. Cyst length 155-165μm, width 145-162.5μm, the inner body length 100-110μm, width 90-110μm (measured 3 ), the holotype length 165μm, width 162.5μm, length and width of the inner body are 110μm, the apical horn length 25μm, left antapical horn length 30 μm, right antapical horn length 20μm, lateral horns length 27. 5μm.
Location and stratigraphy: Wucha County Basebulak; Wulagen fm.
Wilsonidium "tuberosuturatum" He Chengquan, 1991, p.103, pl.37, figs.7–8.
Holotype: He Chengquan, 1991, pl.37, fig.8.
Now Castellodinium? Originally Wilsonidium, subsequently (and now) Castellodinium?
Age: middle Eocene.
----------------------------------------------------------------------------------------------------------------------------------
Description from He Chengquan, 1991, translated by Suning Hou, 07-01-2019
Description: The cyst is dorsal-ventral flattened, contoured kite-shaped or elongated pentagon, length slightly larger than width or nearly equal. It has a developed apical horn, length 20-25μm, the top has coarse particles or spines; There are two unequal antapical horns at the antapex, the left antapical horn is larger, length 30-37μm, the right is 20μm long, they taper distally, the end is rod-shaped; The lateral horns are strongly developed, length 25-27.5μm, the end concave and with significant short rod tumors. The cingulum is marked by the rows of nodules transversely distributed in the equatorial regions and grooves on both lateral horns. The outer wall surface has some short rods, 1-2 μm in length and 1-1.5 μm in diameter, the tumors are likely to be distributed along the plates and the seams between the plates, and sometimes they are mostly concentrated in the cingulum zone and especially noticeable at lateral horns, and sometimes they are more common on local contour, the distribution of the tumors showing some parts, but the detailed tabulation is undetermined. The outline of the inner body is round-square, length is nearly equal to width or slightly larger, slightly convex into the lateral horns; It is generally clearly separated from the outer wall, the lateral external cavity is 0-3μm wide. Archeopyle intercalary, round trapezoid, length larger than width. The operculum is completely separated, fell off or in situ preserved. Cyst length 155-165μm, width 145-162.5μm, the inner body length 100-110μm, width 90-110μm (measured 3 ), the holotype length 165μm, width 162.5μm, length and width of the inner body are 110μm, the apical horn length 25μm, left antapical horn length 30 μm, right antapical horn length 20μm, lateral horns length 27. 5μm.
Location and stratigraphy: Wucha County Basebulak; Wulagen fm.