Authors Year Title
Bogoslovsky 1958 Devonskie ammonoidei Rudnogo Altaya.
Trudy Paleont. Inst. Akad. Nauk SSSR, 64: 1-155, fig.1-45, pl.1-9; Moskva.
Bogoslovsky 1969 Devonskie ammonoidei. I. Agoniatity.
Trudy paleont. Inst., 124: 1-341, fig.1-104, pl.1-29; Moskva.
Clausen 1969 Oberdevonische Cephalopoden aus dem  Rheinischen  Schiefergebirge. II. Gephuroceratidae,Beloceratidae.
Palaeontographica Abt. A, 132: 95-178, fig.1-23, tab.1-11, pl.22-26; Stuttgart.