Baltisphaeridium korykum, (Maier, 1959), Sarjeant, 1964

Originally Galea (an illegitimate generic name), subsequently Baltisphaeridium, thirdly Chiropteridium?, fourthly Hystrichosphaeridium?.
Tax. jr. synonym of Xanthidium (now Spiniferites) ramosum Ehrenberg, 1838, according to Sarjeant, 1983.

Holotype: Maier, 1959, pl.30, fig.7
Age: Middle Miocene