Oligosphaeridium cephalum
From dinoflaj2
"cephalum" Sah et al., 1970, p.147, pl.2, figs.22-23. Holotype: Sah et al., 1970, pl.2, fig.22. Taxonomic senior synonym: Xanthidium tubiferum var. complex (as Oligosphaeridium) complex, according to Lejeune-Carpentier and Sarjeant (1981, p.9) and, Jain (1982, p.52). Fauconnier and Cornu in Fauconnier and Masure (2004, p.403) listed this as a problematic species but apparently accepted the synonymy cited above. Age: Late Cretaceous.
Parent: Oligosphaeridium
