Surculosphaeridium? cassospinum Yun, 1981

Questionable assignment: Yun Hyesu (1981, p.39) and Fauconnier and Pourtoy in Fauconnier and Masure (2004, p.519) as a problematic species.
Holotype: Yun, 1981, pl.16, fig.11; Fensome et al., 1991, fig.3 - p.599
Paratype: Yun, 1981
Locus typicus: Timmermann brickyard near Esbeck, Germany
Stratum typicum: Early Santonian
Translation Yun, 1981: Fensome et al., 1991, p. 599-600

Original diagnosis: Yun, 1981, p. 39
A single-layered, chorate cyst with long, solid and hollow processes which are usually irregularly forked or slit distally. On each paraplate there is one spine which may be replaced, however, by two or three slender spines. The species shows the following arrangement of spines: 4", 6", 1a, 7c, 5""", 1p, 1"""".

Original description: Yun, 1981, p. 39
There are distally open, hollow and solid spines. Each paraplate is generally characterized by one spine. The relatively slender, solid processes are of uniform width and split distally into 3-5 small branches, which may be forked several times. The hollow spines are slightly thicker than the solid ones. They become wider distally and their distal margin is slit irregularly or in a finger-like manner. The cavity in this type of spine is sometimes restricted to the upper half or to the distal
end.