Hystrichosphaeridium sylhetii Baksi, 1962

Now Baltisphaeridium. Originally Hystrichosphaeridium, subsequently (and now) Baltisphaeridium.
Stover and Evitt, 1978, considered it to be a problematical species of Hystrichosphaeridium.

Holotype: Baksi, 1962, fig.26
Age: Eocene