Authors Year Title
Nikolaeva 1994 Serpukhovskie i bashkirskie ammonoidei Sredney Asii.
Trudy Paleontologicheskogo Instituta Rossiiskaya Akademiya Nauk, 259: 1-143, fig.1-56, tab.1-2, pl.1-10; Moskva.
Nikolaeva 1995 Ammonoids from the late Lower and early Upper Carboniferous of Central Asia.
Courier Forschungsinstitut Senckenberg, 179: 1-107, fig.1-75, tab.1-2, pl.1-9; Frankfurt a.M.