1996 Eonomismoceras planum Riley: 29, text-figs.12-13, pl.2 fig.5-8.

[Holotype BGS Keyworth Ro 874, paratypes Ro875-894].

Riley (1996 writes: distinguished “from E. shevyrevi in the subparallel sided,broad-based, acute lateral lobe. E. shevyrevi is further distinguished bypossessing a higher whorl section at comparable diameters”