1914 Oma-monomeroceras (Cheiloceras) umbilifer Sobolev,
p.53, pl.8 fig.8, textfig.81,82.
1936a Cheiloceras umbilifer.-Nalivkina, p.14, pl.2 fig.4,5,
textfig.15.
? 1971 Paratorleyoceras umbiliferum.-Bogoslovsky, p.126.