(Rögl and Bolli, 1973)
Spinose, cosmopolitan but very rare. Small (less than 200 µm), trochospiral, with round as well as triradiate spines. Wall thin, aperture opening towards the umbilicus.
Ref.: Boltovskoy and Watanabe (1981), Holmes (1984), Brummer et al. (1988).
Distribution: Cold water but tolerant to warmer waters, probably cosmopolitan.
Remark: = Hastigerinella riedeli