1909  Eumorphoceras Girty: 67
     1911  Eumorphoceras.- Girty: 103.
     1918  Eumorphoceras.- Wedekind: 139.
     1923  Eumorphoceras.- Brüning: 265.
     1924  Eumorphoceras.- Bisat: 96.
     1924  Eumorphoceras.- C. Schmidt: 373.
pars 1925  Eumorphoceras.- H. Schmidt: 582.
     1929  Eumorphoceras.- H. Schmidt: 70.
     1934  Eumorphoceras.- H. Schmidt: 454.
     1937  Eumorphoceras.- Plummer & Scott: 174.
     1938  Eumorphoceras.- Demanet & Straelen: 175.
     1941  Eumorphoceras.- Demanet: 137.
     1941  Eumorphoceras.- DelÚpine: 79.
     1946  Eumorphoceras.- Moore: 417.
     1948  Eumorphoceras.- Miller & Youngquist: 661.
     1954  Eumorphoceras.- Currie: 581.
     1956  Eumorphoceras.- Elias: 129.
     1957  Eumorphoceras.- Treatise: L59.
     1958  Eumorphoceras.- Elias: 32.
pars 1959  Eumorphoceras.- Patteisky: 9.
     1960  Eumorphoceras.- Ruzhencev: 208.
     1961  Eumorphoceras.- Pareyn: 121.
     1962  Eumorphoceras.- Osnovy: 368.
pars 1962  Eumorphoceras.- Yates: 377.
     1964  Eumorphoceras.- Gordon: 17.
     1964  Eumorphoceras.- McCaleb, Quinn & Furnish: 17.
pars 1965  Eumorphoceras.- Gordon: 234.
pars 1971  Eumorphoceras (Eumorphoceras).- Ruzhentsev &
           Bogoslovskaya: 181
     1973  Eumorphoceras.- Saunders: 43.
pars 1974  Eumorphoceras.- Pitinova: 25.
     1981  Eumorphoceras.- Ruan: 189.
     1989  Eumorphoceras.- Riley: 30.

Type species: Eumorphoceras bisulcatum Girty, 1909, p.68 [OD].

A:   The juvenile conch is thin discoidal and is becomoing
oxycone in adults. The whorls are strongly compressed and
involute. The venter is either narrowly rounded or flattened,
sometimes possesses a keel in adults. The umbilical shoulder is
rounded. The umbilicus is narrow.
C:   The flanks bear transverse ribs which are bent close to
grooves.
E:   Juvenile and adolescent conchs possess ventro-lateral
longitudinal grooves.
G:   Ventral lobe moderately wide with strongly diverging prongs.
Median saddle is low and rounded at the top.