1911  Tornoceratea Arthaber: 175, 176.
     1913  Tornoceratidae.- Smith
pt. 1971  Tornoceratidae.- Bogoslovskiy: 46.
     1993  Tornoceratinae.- Becker: 178.
     2002  Tornoceratinae.-Korn & Klug: 153.
     2002  Tribus Tornoceratini.-Becker et al.: 176.

Becker (1993, p.178) introduced the subdivision of the subfamily Tornoceratinae into three Tribus:

(1) Tribus Tornoceratini Arthaber 1911

Conch with closed or very narrow umbilicus; surface smooth and without ventrolateral furrows, ventral side rounded,
flattended or acute. Growth lines biconvex or convex. Lateral lobe simple or bifid.

(2) Tribus Falcitornoceratini Becker 1993

Conch form discoidal, with closed umbilicus, high aperture. In young and middle growth stages with weak or strong
ventrolateral furrows. Growth lines strongly biconvex, on later stages with slight ventrolateral salient. Lateral lobe
simple, bifid or trifid.

(3) Tribus Aulatornoceratini Becker 1993

Conch form discoidal, pachycone or subglobose, involute or evolute, with moderately wide umbilicus. Surface
smooth or ribbed, frequently with ventrolateral furrows. Ventral side rounded or with two keels. Ventral or adventitious
lobes can be reduced.

See Figs. TAX5775 A: Protornoceras polonicum, B: Tornoceras uniangulare, C: Epitornoceras mithracoides,
D: Polonoceras planum, E: Aulatornoceras auris, F: Pseudoclymenia pseudogoniatites (sutures, from Bogoslovskii,
1971, fig.3).