1984 Acanthocorbis apoda
Cells are 4-6 microns in length, with a truncated anterior, and the posterior end may be pointed. Lorica 13-18 microns long with a constricted posterior chamber, and 12-16 projections protruding from the wider anterior chamber. A single transverse costa in the anterior chamber, formed of overlapping strips, and two or three transverse costae in the posterior chamber. Cells are located in the posterior chamber of the lorica, with the flagellum extending to the top of the lorica or just beyond it.