Hystrichosphaeridium siphoniphorum Cookson and Eisenack 1958

Now Litosphaeridium. Originally Hystrichosphaeridium, subsequently (and now) Litosphaeridium.
Holotype: Cookson and Eisenack, 1958. pl.11, fig.8
Paratypes: Cookson and Eisenack, 1958
Locus typicus: Gingin area (Perth Basin), W Australia
Stratum typicum: Albian-Cenomanian
Translation Gocht, 1969: Geological Survey of Canada

Original description: Cookson and Eisenack 1958, p. 44
Diagnosis: Shell spherical or slightly oval, with a rather thick, granular wall, and approximately 13 hollow conical to tube-like processes of somewhat unequal width
that are open to the exterior and have a slightly recurved margin. A large pylome has been present in some examples.

Gocht, 1969, p.52:
Hystrichosphaeridium cf. siphoniphorum Cookson and Eisenack, 1958
Both objects are incompletely preserved. The central body is subspherical. Intact, it would bear approximately 16-18 mostly thickset processes becomingonly slightly wider at their proximal and distal ends. The distal ends are somewhat fringed or smooth. The surface of the central body is densely granulate, but the circular fields enclosed by the bases of processes remain smooth and hyaline.
Measurements: Main body diameter 24: 21 µ, greatest overall extension 97 µ.
Occurrence: Early Eocene.