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Bosedinia verrurugosa
From Fensome et al., 2019:
Bosedinia verrurugosa He Chengquan, 1984b, p.176–177, pl.8, fig.5. Holotype: He Chengquan, 1984b, pl.8, fig.5. Age:
Middle–Late Oligocene.
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Original description: [He Chengquan, 1984b] (translated from Chinese with Google):
Bosedinia verrurugosa (sp. nov.)
(Plate VIII, Figure 5)
Description: The shell has a nearly circular outline. The shell wall is thin and single-layered; the surface is coarsely wrinkled, unevenly, with fine tubercles (1-1.5 microns in diameter) terminating in the wrinkles. This gives the shell a tuberculate appearance, with low wrinkles and a finely serrated outline. The palate is likely sub-superior, located near the widest point of the shell, with uneven edges; the operculum is connected and wrinkled.
Shell diameter 47-60 μm; holotype diameter 60 μm.
Discussion This species is morphologically and ornamentally similar to Chytroeisphaeridia mantellii Gitmez et Sarjeant (1972, p. 186, plate 1, fig. 3); the difference is that the ornamentation of the latter is composed of coarse grains, irregularly scattered tubercles, and low boils; it dates back to the Late Jurassic. Therefore, the two may not be the same species.
Origin: Shangsi, Guangxi; the second section of the Yongning Group.
Bosedinia verrurugosa He Chengquan, 1984b, p.176–177, pl.8, fig.5. Holotype: He Chengquan, 1984b, pl.8, fig.5. Age:
Middle–Late Oligocene.
---------------------------------------------------------------------------------------------------
Original description: [He Chengquan, 1984b] (translated from Chinese with Google):
Bosedinia verrurugosa (sp. nov.)
(Plate VIII, Figure 5)
Description: The shell has a nearly circular outline. The shell wall is thin and single-layered; the surface is coarsely wrinkled, unevenly, with fine tubercles (1-1.5 microns in diameter) terminating in the wrinkles. This gives the shell a tuberculate appearance, with low wrinkles and a finely serrated outline. The palate is likely sub-superior, located near the widest point of the shell, with uneven edges; the operculum is connected and wrinkled.
Shell diameter 47-60 μm; holotype diameter 60 μm.
Discussion This species is morphologically and ornamentally similar to Chytroeisphaeridia mantellii Gitmez et Sarjeant (1972, p. 186, plate 1, fig. 3); the difference is that the ornamentation of the latter is composed of coarse grains, irregularly scattered tubercles, and low boils; it dates back to the Late Jurassic. Therefore, the two may not be the same species.
Origin: Shangsi, Guangxi; the second section of the Yongning Group.