CALIGELLA Antropov, 1950
Type species: Caligella borovkensis
Antropov, 1950; OD.
Caligella Antropov, 1950 (*51), p. 28.
Test tiny, elongate, with oval proloculus followed by undivided straight to arcuate tube of up to 0.09 mm in diameter, incipient septa partially dividing the tube but rarely completely crossing the inner cavity; wall calcareous, microgranular, dark gray in color; aperture at the open end of the tube. U. Devonian (Frasnian to Fammenian); USSR.