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Hystrichosphaeridium reniforme
Hystrichosphaeridium reniforme Tasch, 1964
Originally Hystrichosphaeridium, subsequently Oligosphaeridium.
Tax. jr. synonym of Hystrichosphaeridium (subsequently Oligosphaeridium) irregulare Pocock, 1962, according to Stover and Evitt, 1978, which species is a tax. jr. synonym of Oligosphaeridium albertense (Pocock, 1962) Davey and Williams, 1969, according to Jansonius, 1986.
Holotypus: Tasch, 1964, pl.2, fig.6
Locus typicus: Clark County, Kansas, U.S.A.
Stratum typicum: Albian
Original diagnosis: Tasch,, 1964, p.193
Shell reniform, with few, thick processes that markedly expand from origins on shell to process extremity, assuming an eccentric, funnellike configuration; extremities of processes flat, or splitting into brief, thin, straight or recurved extensions. Twelve processes spaced on body in groups of three.
Dimensions: Holotype: Length 52 µm; width 36 µm; maximum length of processes 20 µm; width of processes 2-5 µm; maximum width of flare at extremities of processes 12 µm.
Originally Hystrichosphaeridium, subsequently Oligosphaeridium.
Tax. jr. synonym of Hystrichosphaeridium (subsequently Oligosphaeridium) irregulare Pocock, 1962, according to Stover and Evitt, 1978, which species is a tax. jr. synonym of Oligosphaeridium albertense (Pocock, 1962) Davey and Williams, 1969, according to Jansonius, 1986.
Holotypus: Tasch, 1964, pl.2, fig.6
Locus typicus: Clark County, Kansas, U.S.A.
Stratum typicum: Albian
Original diagnosis: Tasch,, 1964, p.193
Shell reniform, with few, thick processes that markedly expand from origins on shell to process extremity, assuming an eccentric, funnellike configuration; extremities of processes flat, or splitting into brief, thin, straight or recurved extensions. Twelve processes spaced on body in groups of three.
Dimensions: Holotype: Length 52 µm; width 36 µm; maximum length of processes 20 µm; width of processes 2-5 µm; maximum width of flare at extremities of processes 12 µm.