1988  Angrenoceras langcuoense Sheng: 154, 171, text-fig.1C,
           2, pl.1 fig.1a-c,
     ----  Angrenoceras obovatum Sheng: 155, 172, text-fig.3,
           pl.1 fig.2a-c.

Holotype: CAGS P3053.