1957  Ammonellipsites (Fascipericyclus).-Gordon: 33.
pt. 1965  Ammonellipsites (Stenocyclus).-Gordon: 174.
     1975  Stenocyclus.-Popov: 116.
     1990  Polaricyclus Riley: 139.
     2000  Polaricyclus.-Work, Nassichuk & Richards: 37.
     2000  Polaricyclus.-Kuzina: 20.
     2003  Polaricyclus.-Work & Mason: 593.
     2004  Polaricyclus.-Work & Mason: 1129.

Type species: Ammonellipsites (Fascipericyclus) polaris Gordon, 1957, p.33 [OD].

A:   Conch form similar to Ammonellipsites, pachyconic, with narrow umbilicus.
C:   Sculpture with prominent simple or dichotomous ribs. Numerous fine ribs increasing in number on flanks and venter through intercalation, with broad and shallow hyponomic sinus.
F:   Ventral lobe with orad diverging sides, median saddle low; first lateral saddle broadly rounded.