Circulodinium distinctum subsp. longispinatum

"subsp. longispinatum" (Davey, 1978, p.894, pl.3, figs.4,7–8) Lentin and Williams, 1989, p.63.  Holotype: Davey, 1978, pl.3, fig.7.  NOW Cyclonephelium longispinatum.  Originally Cyclonephelium distinctum subsp. longispinatum, subsequently Circulodinium distinctum subsp. longispinatum, thirdly (and now) Cyclonephelium longispinatum.  Age: Turonian.

Parent: Circulodinium distinctum