none
Geological Time:
View of a specimen of Discanomalina semipunctata (Bailey, 1851)
The identification is based upon:
, : Bailey, J. W. (1851). Microscopical examination of soundings made by the U.S. Coast Survey off Atlantic coast of the U.S. Smithsonian Contributions to Knowledge. 2: 1-15, 1 pl. Plate , Fig.