1983  Shyndoceras obsoletum Leonova: 47, textfig.4b,v,5,6.
     1989  Shyndoceras obsoletum.-Leonova in Leonova & Dmitriev: 135, pl.9 fig.3,4.
     1992  Shyndoceras obsoletum.-Leonova in Leven, Leonova &  Dmitriev: 153, pl.31 fig.15; pl.32 fig.1.
     1996  Shyndoceras obsoletum.-Leonova: fig.6 a, b, v, g.
cf. 2005  Metaperrinites cf. obsoletus.-Zhou & Yang: 384, Fig.8.6, 8.7, 10.1, tab.2.