1888  Brancoceras pygmaeum Gemmellaro: 31, pl.D fig.27-29.
     1902  Gastrioceras sp.-Frech: 473, textfig.3.
     1943  Imitoceras pygmaeum.-Miller & Unklesbay: pl.3 fig.3,  textfig.5B.
     1957  Neoaganides pygmaeus.-Miller & Furnish: 1046, pl.131  fig.4-7, textfig.3E.
     1973  Pseudovidrioceras pygmaeum.-Davis: 84, pl.21 fig.11-13.
     1981  Sosioceras pygmaeum.-Frest, Glenister & Furnish: 27,  pl.4 fig.1-21, pl.5 fig.1-4, textfig.1E,2B,14E,16.