Subtilisphaera pirnaensis

"?pirnaensis" (Alberti, 1959b, p.100, pl.8, figs.1,5) Jain and Millepied, 1973, p.27.  Holotype: Alberti, 1959b, pl.8, fig.1.  Taxonomic senior synonym: Subtilisphaera perlucida, according to Fensome et al., 2009, p.60.  Originally Deflandrea, subsequently Subtilisphaera, thirdly Subtilisphaera? Questionable assignment: Harker and Sarjeant in Harker et al. (1990, p.133).  Taxonomic junior synonym: Scriniodinium cooksoniae, according to Sarjeant and Anderson (1969, p.232–233).  Lentin and Williams (1976, p.118) stated " 'S. pirnaensis' is transferred to Alterbia ..."; however, they did not effect this change.  Age: ?middle Turonian.

Parent: Subtilisphaera