Volkheimeridium

"VOLKHEIMERIDIUM" Quattrocchio and Sarjeant, 2003, 136,138.  Taxonomic senior synonym: Spinidinium, according to Sluijs et al. (2009, p.46).  Type: Cookson and Eisenack, 1970a, pl.12, fig.2, as Spinidinium lanterna.

Species List:

"Volkheimeridium clavus"
"Volkheimeridium irmoechinatum"
"*Volkheimeridium lanterna"
"Volkheimeridium luciae"