"Hystrichosphaeridium sexradiatum" Timofeev, 1959, p.53, pl.4, fig.7.
TYPE: Holotype: Timofeev, 1959, pl.4, fig.7. HISTORY: Originally Hystrichosphaeridium, subsequently Baltisphaeridium (Appendix A). SYNONYM(S): Taxonomic senior synonym: Hystrichosphaeridium (now Polygonium) polygonale Eisenack, 1931 ex Eisenack, 1938a, an acritarch species, according to Eisenack (1965c, p.261). AGE: Early Ordovician.
Infraspecific taxa: Go up one level. DINOFLAJ (c) 1998 |