Litosphaeridium parvum
From dinoflaj3
"?parvum" Matsuoka and Bujak, 1988, p.62–63, pl.8, figs.2a–b,3a–b,4; text-fig.12. Holotype: Matsuoka and Bujak, 1988, pl.8, figs.2a–b; text-fig.12. Questionable assignment: Matsuoka and Bujak (1988, p.62). Taxonomic senior synonym: Minisphaeridium latirictum, according to Fensome et al. (2009, p.44). Age: late Oligocene–early Miocene.
Parent: Litosphaeridium