pt. 1880  Medlicottia Waagen: 83.
pt. 1885  Medlicottia.- Krotov: 210.
pt. 1887  Medlicottia.- Gemmellaro: 48.
pt. 1888  Medlicottia.- Krotov: 475.
pt. 1889  Medlicottia.- Karpinsky: 21.
pt. 1897  Medlicottia.- Foord & Crick: 265.
pt. 1897  Medlicottia.- Diener: 57.
     1903  Medlicottia.- Smith: 47.
pt. 1904  Medlicottia.- Noetling: 343.
pt. 1907  Medlicottia.-  Tchernow: 358, 397.
pt. 1915  Medlicottia.- Haniel: 41.
pt. 1919  Medlicottia.- B÷se: 67.
     1926  Medlicottia.- Karpinsky: 1.
     1927  Medlicottia.- Smith: 19.
     1931  Medlicottia.- Tumanskaya: 49.
     1935  Medlicottia.- Tumanskaya: 87.
     1937  Medlicottia.- Plummer & Scott: 72.
pt. 1940  Medlicottia.- Miller & Furnish: 49.
pt. 1944  Medlicottia.- Miller: 84.
     1940  Medlicottia.- Miller & Furnish: 49.
     1947  Neogeoceras.- Ruzhentsev: 641.
     1949  Neogeoceras.- Ruzhentsev: 155.
     1949  Medlicottia.- Ruzhentsev: 145.
     1957  Medlicottia.- Treatise: L74.
     1960  Medlicottia.- Ruzhentsev: 189.
     1962  Medlicottia.- Osnovy: 354.
     1966  Medlicottia.- Furnish: 287.
     1969  Medlicottia.- Nassichuk: 116.
     1971  Medlicottia.- Nassichuk: 1010.
     1985  Medlicottia.-Bando & Ehiro in Ehiro & Bando: 38.
?   1992  Paramedlicottia Leonova in Leven, Leonova & Dmitirev: 138.
     2002  Medlicottia.-Leonova: S.20.
     2005  Medlicottia.-Zhou & Yang: 381.

Type species: Goniatites orbignyanus de Verneuil, 1845, p. 375 [SD Foord & Crick, 1897].

Fig. TAX5905 A: Medlicottia orbignyana, B: Eumedlicottia bifrons (sutures).

[MILLER & FURNISH, 1940, p.49: In all of them the conch is sublenticular to subdiscoidal, and the whorls are flattened laterally, retuse or flattened ventrally, and deeply depressed dorsally. In one species the phragmacone attains a diameter of more than 250 mm. The umbilicus is small but not closed. The growth-lines are sinuous, and each forms a ventral salient and on either side of it a broad rounded sinus, a similar lateral salient, and  a similar but somewhat more prominent sinus that extends to the umbilicus. Charateristically the ventro-lateral shoulders of the conch are smooth. However, in some forms nodes are present during early growth stages, and in others they are retained throughout ontogenetic development. In a few forms the lateral zone of the conch bear shallow rounded longitudinal grooves at maturity. The sutures form a deep narrow denticular ventral lobe and on either side of it a high narrow denticular first lateral saddle, a bifid first lateral lobe, a rounded second lateral saddle, a large  bifid second lateral lobe, and numerous auxiliary lobes and saddles. The adapical part of the ventral lobe is divided. There are seven to fourteen secondary lobes in the first lateral saddle, at least one of which is charateristically bifid. Their prominence varies greatly in different species and even in a single individual during ontogenetic development. The internal lobes are bifid, whereas the saddles rounded. The dorsal lobe is prominently bifid].