Authors Year Title
Lemosquet, Conrad & Manger 1985 Ammononoids. [In: M.Diaz, R.H.Wagner, C.F. Winkler Prins & L.F.Granados, eds., The Carboniferous of the World, 2.]
International Union of Geological Sciences Publication, 20: 367-372, pls.7-10, Madrid.
Manger, Weyant & Pareyn 1985 Mid-Carboniferous ammonoid biostratigraphy, Bechar Region, Algeria.
Courier Forschungsinstitut Senckenberg, 74: 181-196, fig.1-2, pl.1-2; Frankfurt a.M.