Hystrichosphaeridium tribrachiosum Tasch, 1964

Originally Hystrichosphaeridium, subsequently Polysphaeridium?.
Tax. jr. synonym of Hystrichosphaeridium (now Kiokansium) unituberculatum Tasch, 1964, according to Stover and Evitt, 1978

Holotype: Tasch, 1964, pl.1, fig.3
Age: Albian

Original (Tasch, 19640):
Diagnosis: Subovate capsule characterized by triads of thin, tubular processes, flat-ended or bifurcate at terminations.
Measurements: Length, 50 µm; width, 44 µm; length of processes, 8-10 µm; thickness of processes, 1-2 µm; density of processes, 1 per 5 µm of edge.
Holotype: WU-DF 0117. Slide no. 1016. Coordinates: R 59, D 8+.
Locality: Sampling interval 4-I-H.