Hystrichosphaeridium mespilanum
From dinoflaj3
"mespilanum" (Maier, 1959, p.306–307, pl.29, figs.5–6) Eisenack and Kjellström, 1975b, p.233–234. Holotype: Maier, 1959, pl.29, fig.5. Originally Galea (generic name illegitimate), subsequently Baltisphaeridium (Appendix A), thirdly Chiropteridium, fourthly Hystrichosphaeridium. Taxonomic senior synonym: Galea (now Chiropteridium) galea, according to Sarjeant (1983, p.108–109). Age: middle Oligocene–middle Miocene.
Parent: Hystrichosphaeridium