TURRISPIRILLINA Cushman, 1927

 

 

Type species: Spirillina conoidea Paalzow, 1917 (*2321), p. 217; OD.

Turrispirillina Cushman, 1927 (*742), p. 73.Test a small, low cone, of globular proloculus and long undivided tubular enrolled second chamber forming about four whorls that are visible on the convex side and around the umbilical region of the concave side; wall calcareous, finely perforate; aperture at the open end of the tube on the flattened concave side. U. Jurassic to Holocene; cosmopolitan.