1958  Dimorphoceras (Metadimorphoceras) Moore: 222
     1969  Metadimorphoceras.- Ruzhentsev & Bogoslovskaia: 45.
     1971  Paradimorphoceras.- Ruzhentsev & Bogoslovskaia: 192.
     1972  Metadimorphoceras.- Manger & Quinn: 309.
     1988  Metadimorphoceras.-Manger: 32, text-fig.1H-1N.
     2008  Metadimorphoceras.-Korn & Ebbighausen::93.

Type species: Goniatites splendidus Brown, 1841, p. 215 [OD].

Like Glyphiolobus, but with tertiary subdivision of ventrad and dorsad portions of ventral lobe.
[Some authors (e. g. RUZHENTSEV & BOGOSLOVSKAIA, 1971, p.192, RUAN, 1981, p.208) regard
Metadimorphoceras as a junior synonym of Paradimorphoceras RUZHENTSEV, 1947, type species Goniatites
looneyi PHILLIPS, 1836, p.236].

Figs. TAX3784 A: Glyphiolobus discrepans, B - F: Metadimorphoceras sp. sp. (sutures).