1957  Acutimitoceras Librovich: 263.
pars1960  Imitoceras.- Vöhringer: 113.
pars1960  Prionoceras (Imitoceras).- Kullmann: 68.
       1960  Acutimitoceras.- Ruzhentsev: 197.
       1962  Acutimitoceras.- Bogoslovskiy, Librovich & Ruzhentsev:  362.
pars1965  Prionoceras (Imitoceras).- Weyer: 446.
       1971  Balvia.- AG Dinantium-Stratigraphie: 6, fig.1.
       1971  Balvia.- AG Dinantium-Stratigraphie: Tab.1.
pars1977  Imitoceras.- Weyer:169.
       1981  Acutimitoceras.- Korn: 517.
       1984  Acutimitoceras.- Korn:73.
       1994  Acutimitoceras.-Korn: 37.
       1996  Acutimitoceras.-Becker: 36,
        -----   Acutimitoceras (Acutimitoceras).-Becker:  36,
        -----   Acutimitoceras (Stockumites) Becker: 36,
        -----   Acutimitoceras (Streeliceras) Becker: 37,
       -----    Acutimitoceras (Sulcimitoceras).- Becker: 37.
     2002  Acutimitoceras.-Korn & Klug: 196.
     2003  Hasselbachia Korn & Weyer: 95.

Type species: Imitoceras acutum Schindewolf, 1923, p.338 [OD].

Subgenera: A. (A.) Librovich, 1957; A. (Stockumites) Becker, 1996; A. (Streeliceras) Becker, 1996.

A  Conch form: lenticular to pachycone, venter rounded, rarely oxycone. Early ontogenetic stages evolute; middle and adult
    stages with narrow umbilicus.
B  Growth lines mostly fine and linear.
D  Constrictions variable in number and position.
G  Suture usually with parallel-sided ventral lobe.

Acutimitoceras (Acutimitoceras): Oxyconic at adult stages. Ventral lobe deep and mostly wide. Adventitious lobe asymmetric.
Constrictions variable.

Acutimitoceras (Stockumites): Ventral side rounded. Ventral lobe deep, relatively narrow. Constrictions variable or missing.

Acutimitoceras (Streeliceras): Conch form discoidal, adult stage with closed umbilicus, parallel-sided ventral lobe significantly
shorter than adventitious lobe.

[Differences are regarded herein as of specific rather than generic significance]. Hasselbachia Korn & Becker 2003: s. Acutimitoceras (Stockumites).