1938  Mimagoniatitinae Miller 23.
     1957  Mimagoniatitidae.- Ruzhentsev [nom. transl.].
     1960  Mimagoniatitidae.- Ruzhentsev: 169.
     1962  Mimagoniatitidae.- Osnovy: 336.
     1969  Mimagoniatitidae.- Bogoslovskii: 137.
     2001  Mimagoniatitidae.-Klug: 509.
pt. 2002  Mimagoniatitaceae.-Korn & Klug: 70,
     2002  Mimagoniatitidae.-Korn & Klug: 70.

Klug, 2001, p.509: Shell of small to large size, evolute, thinly discoidal to discoidal; with distinct imprint zone. Whorl cross section subcircular and depressed in early whorls, later subtrapezoidal, with converging flanks. Umbilicus narrow to moderately wide (uw/dm = ca. 0.25), small or absent umbilical window (< 1 mm). Protoconch ovoid to subglobular, large (0.9 to 1.1 mm), slightly bent. Whorl expansion rate increases remarkably from the second whorl on (> 2.1, up to 4.1). Growth line course biconvex with shallow umbilical salients, shallow lateral sinuses, prominent ventrolateral projections and deep ventral sinuses. Suture line with narrow and deep external lobe, broadly rounded lateral lobe, and small, pointed and V-shaped internal lobe induced by a septal tie point; without lateral septal inflexions.

Comparisons (Klug, 2001, p.509): The Mimagoniatitidae differ from the Mimosphinctidae ERBEN 1953, the Mimoceratidae STEINMANN 1890, and the Teicherticeratidae BOGOSLOVSKY 1969 in the deeper imprint zone. Most of the Mimosphinctidae and Anarcestidae STEINMANN 1890 have a lower whorl expansion rate (< 2.1). High ventrolateral projections of the growth lines separate the Mimagoniatitidae from the Mimosphinctidae and the Teicherticeratidae. Additionally, the Mimagoniatitidae have smaller umbilical windows (< 1.2 mm). More conspicuous differences occur between the Mimagoniatitidae and the Auguritidae BOGOSLOVSKY 1961 which have oxyconic conch shapes.