Back
Polysphaeridium polypes
Polysphaeridium? polypes (Cookson and Eisenack, 1962) Davey and Williams, 1966.
Originally Hystrichosphaeridium recurvatum ssp. polypes, subsequently Polysphaeridium? polypes (combination not validly published), thirdly Cleistosphaeridium polypes, fourthly Bacchidinium polypes, fifthly Impletosphaeridium polypes, sixthly Kiokansium polypes.
Tax. sr. synonym of Kiokansium unituberculatum (Tasch, 1964) Stover and Evitt, 1978, according to Duxbury, 1983, Lentin and Williams, 1986 and Lentin and Williams, 1989. However, Davey, 1969 raised Hystrichosphaeridium
recurvatum ssp. polypes to the species rank, as Cleistosphaeridium polypes. Therefore, at the species rank, Kiokansium unituberculatum is the tax. sr. synonym. Duxbury, 1983 emended the diagnosis of this species.
Tax. sr. synonym of Cleistosphaeridium? solidum Yun, 1981, according to Below, 1982. Davey and Williams, 1966 questionably included this species in Polysphaeridium.
Holotype: Cookson and Eisenack, 1962, pl.4, figs.11-13
Age: Albian- Cenomanian
Originally Hystrichosphaeridium recurvatum ssp. polypes, subsequently Polysphaeridium? polypes (combination not validly published), thirdly Cleistosphaeridium polypes, fourthly Bacchidinium polypes, fifthly Impletosphaeridium polypes, sixthly Kiokansium polypes.
Tax. sr. synonym of Kiokansium unituberculatum (Tasch, 1964) Stover and Evitt, 1978, according to Duxbury, 1983, Lentin and Williams, 1986 and Lentin and Williams, 1989. However, Davey, 1969 raised Hystrichosphaeridium
recurvatum ssp. polypes to the species rank, as Cleistosphaeridium polypes. Therefore, at the species rank, Kiokansium unituberculatum is the tax. sr. synonym. Duxbury, 1983 emended the diagnosis of this species.
Tax. sr. synonym of Cleistosphaeridium? solidum Yun, 1981, according to Below, 1982. Davey and Williams, 1966 questionably included this species in Polysphaeridium.
Holotype: Cookson and Eisenack, 1962, pl.4, figs.11-13
Age: Albian- Cenomanian