Hystrichosphaeridium irregulare Merrill 1895
From dinoflaj2
"?irregulare" (Merrill, 1895, p.16; text-fig.14) Sarjeant, 1964b, p.175. Holotype: Merrill, 1895, text-fig.14. Combination illegitimate - senior homonym: Hystrichosphaeridium irregulare Pocock, 1962. Substitute name: Hystrichosphaeridium speciale. Originally Geodia? irregularis (Appendix A), subsequently Hystrichosphaeridium irregulare (combination illegitimate), thirdly Hystrichosphaeridium? irregulare (combination illegitimate), fourthly Hystrichosphaeridium speciale. Questionable assignment: Stover and Evitt (1978, p.56) as a problematic species. Taxonomic senior synonym: Xanthidium tubiferum var. complex (now Oligosphaeridium complex), according to Harker and Sarjeant in Harker et al. (1990, p.59). Age: Early Cretaceous.
Parent: Hystrichosphaeridium
