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Cleistosphaeridium solidum
Cleistosphaeridium? solidum, Yun, 1981
Tax. jr. synonym of Hystrichosphaeridium recuruatum ssp. polypes Cookson and Eisenack, 1962, according to Below, 1982, and hence, by implication, a tax. jr. synonym of Kiokansium unituberculatum (Tasch, 1964) Stover and Evitt, 1978, which species is a tax. sr. synonym of Hystrichosphaeridium recuruatum ssp. polypes at the species rank.
Yun, 1981, questionably included this species in Cleistosphaeridium.
Holotype: Yun, 1981, pl.11, fig.13 and Fensome et al., 1991, fig.2-p.739
Paratype: Yun, 1981, pl.11, fig.9
Locus typicus: Timmermann brickyard near Esbeck, Germany
Stratum typicum: Early Santonian
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Original description: [Yun, 1981, p. 43] (Translation: Fensome, 1991, p. 739-740):
Diagnosis:
A single-layered, proximochorate, spherical cyst with simple, solid spines which are distally forked into 2-5 small, acuminate branches.
Description:
The central body is round to oval and consists of a smooth or perforate layer which gives rise to solid, simple spines. The length and width of the spines are constant within one specimen, but the length varies intraspecifically from one half to an entire central body radius. The spines are not basally thickened on the central body and taper with straight sides up to the distal appendages. These occur in the shape of hooklets, tines or fingers. If several appendages are present, they fork obliquely upwards and are of unequal size. Occasionally, the spines are bifurcate immediately below the distal appendages.
Tax. jr. synonym of Hystrichosphaeridium recuruatum ssp. polypes Cookson and Eisenack, 1962, according to Below, 1982, and hence, by implication, a tax. jr. synonym of Kiokansium unituberculatum (Tasch, 1964) Stover and Evitt, 1978, which species is a tax. sr. synonym of Hystrichosphaeridium recuruatum ssp. polypes at the species rank.
Yun, 1981, questionably included this species in Cleistosphaeridium.
Holotype: Yun, 1981, pl.11, fig.13 and Fensome et al., 1991, fig.2-p.739
Paratype: Yun, 1981, pl.11, fig.9
Locus typicus: Timmermann brickyard near Esbeck, Germany
Stratum typicum: Early Santonian
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Original description: [Yun, 1981, p. 43] (Translation: Fensome, 1991, p. 739-740):
Diagnosis:
A single-layered, proximochorate, spherical cyst with simple, solid spines which are distally forked into 2-5 small, acuminate branches.
Description:
The central body is round to oval and consists of a smooth or perforate layer which gives rise to solid, simple spines. The length and width of the spines are constant within one specimen, but the length varies intraspecifically from one half to an entire central body radius. The spines are not basally thickened on the central body and taper with straight sides up to the distal appendages. These occur in the shape of hooklets, tines or fingers. If several appendages are present, they fork obliquely upwards and are of unequal size. Occasionally, the spines are bifurcate immediately below the distal appendages.