1975  Decoritidae Ruzhentsev & Bogoslovskaia: 48.
     1971  Decoritidae.- Ruzhentsev & Bogoslovskaia: 221.
*    1997  Decoritinae.- GONIAT [nom.transl., herein].

Family Homoceratidae SPATH, 1934:

A:   Conch form discoidal to globose, moderately involute. Umbilicus moderately wide to narrow. Tendency towards oxycone
venter.
B-C: More or less prominent transversal ornamentation frequently present; course of growth striae or lamellae variable, but always forming ventral sinus. Spiral ornamentation rare and mostly restricted to umbilical shoulder. Umbilical tubercles in advanced forms.
G:   Ventral lobe relatively wide, with sigmoidal or roundedly diverging sides; median saddle fairly high. First lateral saddle
broadly rounded. Adventitious lobe pointed, mostly with straight sides, rarely bell-shaped or rounded.

Subfamily Decoritinae RUZHENTSEV & BOGOSLOVSKAIA, 1975:

A:   Conch form like Homoceratinae, but no "calyx" stage with sharp umbilical shoulder on early whorls.
B:   Sculpture consisting of dichotomous or polyschizotomous ribs forming shallow ventrolateral salient and ventral sinus.
F:   Reticulate ornamentation in advanced forms. Ventral lobe relatively narrow, median saddle reaching almost two third of
height of entire ventral lobe.

Fig. 5539 A: Kushanites, B: Brevikites, C: Decorites (sutures).

[Ruzhentsev et Bogoslovskaya, 1978, p.221: Conch not large, subdiscoidal to subophiocone and suboxycone.  Whorls completely to moderately involute.  Umbilicus tight to moderately wide.  Sculpture strongly developed, mainly radial, represented by regularly dichotoming ribs, which form a ventral sinus.  Only one genus posesses weak lirae.  Ventral lobe not very wide, even degrading in the process of phylogeny (w/h = 0.90 - 0.55);  its prongs always thin and sharp or rounded.  Medial saddle not high to very low (height of saddle / height of lobe = 0.60 - 0.20).]