Crucispina cruciformis (Leadbeater, 1974) Espeland in Espeland and Throndsen, 1986. Cell body obovoid, 3-5 microns long x 2-5 microns wide, single flagellum 14-20 microns long, funnel-shaped collar of about 30 tentacles 1-3 microns long. Lorica 12-17 microns high consisting of one chamber formed by one transverse costa and several longitudinal costae converging posteriorly to join with two divergent tapered spines. Two tapered spines projecting anteriorly from the transverse costa.
