"Cleistosphaeridium heteracanthum" (Deflandre and Cookson, 1955, p.276, pl.2, figs.5-6; text-figs.40-41) Davey et al., 1966, p.168.
TYPE: Holotype: Deflandre and Cookson, 1955, pl.2, fig.5. HISTORY: NOW: Heterosphaeridium?. Originally Hystrichosphaeridium, subsequently Baltisphaeridium (Appendix A), thirdly Cleistosphaeridium, fourthly Heterosphaeridium, fifthly (and now) Heterosphaeridium?. AGE: ?Late Cretaceous-Early Eocene.
Infraspecific taxa: Go up one level. DINOFLAJ (c) 1998 |