none
Geological Time: Quaternary Holocene recent
holotype
View of a specimen of Vertebrasigmoilina mexicana (Cushman, 1922)
The identification is based upon:
, : Cushman, J. A. (1922). Shallow-water Foraminifera of the Tortugas region. Publications of the Carnegie Institution of Washington 311. Department of Marine Biology of the Carnegie Institution of Washington. Volume 17: 1-85. Plate , Fig.