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Hystrichosphaeridium penicillatum
Hystrichosphaeridium penicillatum (Ehrenberg, 1843 ex Ehrenberg, 1854) Deflandre, 1937
NOW Systematophora penicillata. Originally Xanthidium penicillatum (acritarch), subsequently Hystrichosphaera penicillata (combination not validly published), thirdly Hystrichosphaeridium penicillatum, fourthly Ovum hispidum penicillatum (combination not validly published; acritarch), fifthly Hystrichosphaeridium? penicillatum, sixthly (and now) Systematophora penicillata. Questionable assignment: Stover and Evitt (1978, p.56) as a problematic species.
Taxonomic junior synonym: Systematophora fasciculigera, according to Sarjeant (1980a, p.282).
Holotype: Ehrenberg, 1854, pl.37, fig.8.3
Age: Late Oxfordian
NOW Systematophora penicillata. Originally Xanthidium penicillatum (acritarch), subsequently Hystrichosphaera penicillata (combination not validly published), thirdly Hystrichosphaeridium penicillatum, fourthly Ovum hispidum penicillatum (combination not validly published; acritarch), fifthly Hystrichosphaeridium? penicillatum, sixthly (and now) Systematophora penicillata. Questionable assignment: Stover and Evitt (1978, p.56) as a problematic species.
Taxonomic junior synonym: Systematophora fasciculigera, according to Sarjeant (1980a, p.282).
Holotype: Ehrenberg, 1854, pl.37, fig.8.3
Age: Late Oxfordian