1947 Yakutoceras Librovitch: 64 [nom. nud.].
1960 Yakutoceras.- Ruzhencev: 249 [nom.nud.].
1960 Yakutoceras.- Popov: 88 [nom.nud.].
1960 Orulganites.- Ruzhencev: 143.
1962 Yakutoceras.- Osnovy: 409 [nom.nud.].
1965 Yakutoceras Popov: 70.
1970 Yakutoceras.-Popov: 121.
1985 Mezorulganites Andrianov: 27.

First revising author of genus and type species: Popov, 1965, p.70,
Type species: Yakutoceras aldanicum Librovitch, 1947, [nom. nud.] . = Yakutoceras aldanicum Popov, 1965, p.71 [OD].

[ = Mezorulganites ANDRIANOV, 1985, p.27, type M. borealis, p.27, OD (subj.)].

A: Conch form subdiscoidal to subglobular, moderately evolute, with moderately wide umbilicus.
F: Longitudinal ornamentation present.
D: Constrictions on immature stages.

[Transitional to Orulganites, maybe its junior synonym. The name was proposed by LIBROVICH, 1947, p.64, without
sufficient description and indication of type species; formal description and type species by POPOV, 1965, p.70.
For discussion see RUZHENTSEV & GANELIN, 1971, p.57]. Aldanites is erected for species with normal
(not triangular) coiling of inner whorls, a character not regarded herein as of specific or generic significance
(compare Family Goniatitidae). Mezorulganites differs slightly in its suture].