Acritarcha

Orthosphaeridium octospinosum Eisenack, 1968

Synonymy list
1968     Orthosphaeridium octospinosum — Eisenack, pp. 92, fig. 25:2-3
1970     Orthosphaeridium insculptum — Loeblich, pp. 734-735, fig. 30A-E
1971     Orthosphaeridium densigranosum — Kjellström, pp. 28-30, fig. 19
1971     Orthosphaeridium densiverrucosum — Kjellström, pp. 30, fig. 20
1991     Orthosphaeridium insculptum f.erectum — Uutela &Tynni, pp. 103
2020     Orthosphaeridium octospinosum Eisenack, 1968 — Navidi-Izad et al., pp. 7