Pyxidinopsis pannonia

"?pannonia" (Lentin and Williams, 1973, p.106) Head, 1994a, p.308.  Holotype: Nagy, 1969, pl.1, fig.1.  Name illegitimate - nomenclatural senior synonym: Palaeoperidinium (now Pyxidinopsis?) nudum, which has the same holotype.  NOW Pyxidinopsis? nuda.  Originally Palaeoperidinium nudum Nagy, subsequently Palaeoperidinium pannonium (name illegitimate), thirdly Phthanoperidinium pannonium (name illegitimate), fourthly Gonyaulacysta? nuda, fifthly Tectatodinium? nudum, sixthly Tectatodinium pannonium (name illegitimate), seventhly Pyxidinopsis? pannonia (name illegitimate), eighthly (and now) Pyxidinopsis? nuda.  Questionable assignment: Head (1994a, p.308).  Palaeoperidinium pannonium is the substitute name for Palaeoperidinium nudum Nagy, 1969, p.291, pl.1, fig.1.  Age: Pannonian.

Parent: Pyxidinopsis