"Hystrichosphaeridium placacanthum" Deflandre and Cookson, 1955, p.276-277, pl.9, figs.1-3.
EMENDATION: May, 1980, p.68, as Systematophora placacantha. TYPE: Holotype: Deflandre and Cookson, 1955, pl.9, figs.1-2. HISTORY: NOW: Systematophora. Originally Hystrichosphaeridium, subsequently Baltisphaeridium (Appendix A), thirdly Impletosphaeridium, fourthly (and now) Systematophora. SYNONYM(S): Taxonomic junior synonyms: Baltisphaeridium (as Cleistosphaeridium) panniforme, according to Sarjeant (1984b, p.86-87); Systematophora ancyrea, according to Stover and Evitt (1978, p.84) - however, Lentin and Williams (1981, p.272) retained Systematophora ancyrea. AGE: Miocene.
Infraspecific taxa: Go up one level. DINOFLAJ (c) 1998 |