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Hystrichosphaeridium striolatum
Hystrichosphaeridium striolatum Deflandre, 1937
Now Coronifera. Originally Hystrichosphaeridium, subsequently Baltisphaeridium, thirdly Exochosphaeridium, fourthly (and now) Coronifera.
Tax. synonym of Operculodinium hirsutum (Ehrenberg, 1838) Lentin and Williams, 1973, according to Sarjeant, 1984, which, as noted by that author, is not a validly published species name.
Holotype: Deflandre, 1937, pl.15 [al. pl.12], fig.1
Age: Late Cretaceous
Now Coronifera. Originally Hystrichosphaeridium, subsequently Baltisphaeridium, thirdly Exochosphaeridium, fourthly (and now) Coronifera.
Tax. synonym of Operculodinium hirsutum (Ehrenberg, 1838) Lentin and Williams, 1973, according to Sarjeant, 1984, which, as noted by that author, is not a validly published species name.
Holotype: Deflandre, 1937, pl.15 [al. pl.12], fig.1
Age: Late Cretaceous