1982  Mangeroceras Sturgeon, Windle, Mapes & Hoares, p.1474.
     1997  Mangeroceras.-Mapes et al.: 222.

Type species: Mangeroceras canfieldense Sturgeon, Windle, Mapes & Hoare,1982,p.1475 [OD].

A:   Conch form and sculpture like Donetzoceras [conch relatively small, thick-discoidal. Inner whorls evolute, later stages
involute. Sculpture consisting of nodelike riblets and umbilical plications which disappear at maturity. Growth lines form
shallow ventral sinus and ventrolateral salient. Shallow lateral sulci may be developed].
G:   Ventral lobe with sigmoidal sides; adventitious lobe large. Prongs of ventral lobe and adventitious lobe pointed at their
base.

[Closely related to Donetzoceras and Wiedeyoceras, maybe junior synonym of either one].

[Mapes et al., 1997, p.222: Subdiscoidal conch (W/D = 0.41-0.59) having depressed to compressed whorls
(H/W = 0.48-1.08) and a relatively narrow umbilicus at maturity (U/D = 0.08-0.26). Early ontogeny of conch characterized
by pronounced ribs on umbilical shoulder; ribs lostat diameters greater than about 15.0 mm. More mature shells relatively
smooth. Growth lines forming shallow to moderate ventral sinus followed by well-developed lateral salients and shallow
ocular sinus; ventrolateral sulci may be present during later stages of ontogeny. Constrictions common on some juvbenile
conchs are missing on relatively mature forms. External suture characterized by wide ventral lobe having shallow, bluntly
pointed, V- to U-shaped ventral prongs, widely rounded lateral saddles, and widely rounded to narrow, pointed,
subangular lobes nearlya equal to or longer than ventral prongs; umbilcal lobe V shaped.]

Fig. see  TAX5528 F.