Authors Year Title
Nikolaeva, Akhmetshina & Konovalova 2009 The Carboniferous carbonates of the Dombar Hills (western Kazakhstan) and the problem of the Viséan-Serpukhovian boundary. [S.V.Nikolaeva, L.Z.Akhmetshina, V.A.Konovalova, V.F.Korobkov & G.F.Zainakaeva]
Palaeoworld, 18: 80-93, 9 fig.
Ruzhencev & Bogoslovskaya 1971a Namiurskii etap v evoliutsii ammonodei. Rannenamiurskie ammonoidei.
Trudy Paleontologicheskogo Instituta Akademiya Nauk SSSR, 133: 1-382, fig.1-89, pl.1-40; Moskva.