1920  Sphenoclymenia Schindewolf: 128.
     1923  Sphenoclymenia.- Schindewolf: 480.
     1957  Sphenoclymenia.- Treatise: L40.
     1960  Sphenoclymenia.- Petter: 18.
     1960  Sphenoclymenia.- Ruzhentsev: 240.
     1962  Sphenoclymenia.- Osnovy: 405.
     1981  Sphenoclymenia.- Bogoslovskii: 102.
     1989  Sphenoclymenia.-Price & Korn: 271.

Type species: Goniatites maximus Münster, 1832, p.29; OD.

A:   Conch form discoidal; venter narowly or broadly rounded; flanks convex or flattened; umbilicus moderately wide or wide.
C:   Usually about 20 simple ribs on flanks, sometimes connected with umbilical spines.
G:   Simple, V-shaped ventral lobe; symmetric or asymmetric, lanceolate or V-shaped lateral lobe; three additional pointed
lobes on flanks.

Sutural formula: [Germ.] EA2A1LU1U2I, [Russ.] VL1LUI:I1D.