Hystrichosphaera pterota

"pterota" (Cookson and Eisenack, 1958, p.50, pl.11, fig.7) Eisenack and Kjellström, 1972, p.575.  Emendation: Pavlishina, 1990, p.95, as Pterodinium? pterotum.  Holotype: Cookson and Eisenack, 1958, pl.11, fig.7.  NOW Pterodinium? Originally Cymatiosphaera (Appendix A), subsequently Spiniferites, thirdly Hystrichosphaera, fourthly Spiniferites?, fifthly (and now) Pterodinium?.  Taxonomic senior synonym: Cymatiosphaera (as and now Pterodinium) cingulata, according to Below (1981a, p.114) - however, Pavlishina (1990, p.95) retained Cymatiosphaera (now Pterodinium?) pterota.  Taxonomic junior synonyms: Hystrichosphaera (as Spiniferites) crassimurata, according to Kjellström (1973, p.44) and Pavlishina (1990, p.95); (at specific rank) Hystrichosphaera cingulata var. polygonalis, according to Pavlishina (1990, p.95) - however, Paul et al. (1994, p.722) retained Hystrichosphaera cingulata subsp. polygonalis (as Pterodinium cingulatum subsp. polygonale).  Age: Maastrichtian.

Parent: Hystrichosphaera