1993  Nicimitoceras Korn: 585.
     1995  Acutimitoceras (Acrimitoceras) Ruan: 348.

Type species: Imitoceras acre Vöhringer, 1960, p.121 [OD]

Ruan 1995 established the subgenus Acutimitoceras (Acrimitoceras) for Gattendorfiidae with short V-shaped ventral lobe and a pair of broadly deep adventitious lobes, characters common among species of Nicimitoceras Korn, 1993.