1976  Imitoceras n.sp. aff. acutum.-Weyer, p.839, fig.2.
     1996  Acutimitoceras (Acutimitoceras) n.sp. aff. acutum  Weyer.-Becker: 36.
     1996  Acutimitoceras acutum oxynotum Bartzsch & Weyer:96, text-fig.2-4.
af. 2004  Acutimitoceras aff. oxynotum.-Becker & Weyer: 20, Fig.4g

Keel ontogenetically late: venter rounded at 10 mm diameter; keel appears at 13-15 mm diameter.

See Fig. TAX20 B, C (cross-section and suture, from Bartzsch & Weyer, 1996, fig.2).