Cyclonephelium distinctum

"distinctum" Deflandre and Cookson, 1955, p.285–286, pl.2, fig.14; text-figs.47–48.  Holotype: Deflandre and Cookson, 1955, pl.2, fig.14.  NOW Circulodinium.  Originally Cyclonephelium, subsequently (and now) Circulodinium.  Taxonomic junior synonym: Circulodinium deflandrei, according to Millioud (1969, p.427) and Harker and Sarjeant in Harker et al. (1990, p.80) — however, Fauconnier and Londeix in Fauconnier and Masure (2004, p.114) retained Circulodinium deflandrei.  Age: Senonian.

Parent: Cyclonephelium

Infrataxon List:

"Cyclonephelium distinctum subsp. brevispinatum"
"Cyclonephelium distinctum subsp. distinctum"
"Cyclonephelium distinctum subsp. laevigatum"
"Cyclonephelium distinctum subsp. longispinatum"
"Cyclonephelium distinctum subsp. psilatum"
"Cyclonephelium distinctum var. brevispinatum"
"Cyclonephelium distinctum var. distinctum"
"Cyclonephelium distinctum var. psilatum"