Hystrichosphaeridium breviatum
From dinoflaj2
?breviatum Morgenroth, 1966a, p.29, pl.7, figs.11-12. Holotype: Morgenroth, 1966a, pl.7, figs.11-12; Fauconnier and Masure, 2004, pl.43, figs.5-7. Taxonomic senior synonym (at subspecific rank): Hystrichosphaeridium zoharyi subsp. ktana (as Polysphaeridium subtile subsp. ktana), according to Islam (1983b, p.343) - however, Masure and Foucher in Fauconnier and Masure (2004, p.309-310) retained this taxon as a questionable species of Hystrichosphaeridium. Questionable assignment: Stover and Evitt (1978, p.56). Age: Early Eocene.
Parent: Hystrichosphaeridium
