Authors Year Title
Bogoslovsky 1969 Devonskie ammonoidei. I. Agoniatity.
Trudy paleont. Inst., 124: 1-341, fig.1-104, pl.1-29; Moskva.
Foord & Crick 1897 Catalogue of the fossil Cephalopoda in the British Museum (Natural History). Part III, containing the Bactritidae and part  of the Suborder Ammonoidea).
pp.I-XXXIII, 1-303, 145 figs., London.
Holzapfel 1899 Die Cephalopoden des Domanik im südlichen Timan.
Trudy geol. komiteta 12 (3): 1-56, pls.1-10, St. Petersbourg.
Kuz'min & Yatskov 1997 Transgressive-Regressive events and conodont and ammonoid assemblages in the Frasnian of the South Timan.
Courier Forschungsinstitut Senckenberg, 199: 25-36, 8 figs., Frankfurt.