Voss-Foucart, M.F., & Grégoire, C., 1971.:MareMagnumBiochemical composition and submicroscopic structure of matrices of nacreaous conchiolin in fossil cephalopods (nautiloids and ammonoids). [Bull. Inst. Roy. Sci. Nat. Belgique, 47(41).]
Stehn, E., 1923.:MareMagnumBeiträge zur Kenntnis des Bathonien und Callovien in Südamerika. (Beiträge zur Geologie und Paläontologie von Südamerika. XXV.)pp. 52-158, 8 pls. of ammonites, 19 figs., refs. Orig. wrs. Spine mended. - Deals only with the ammonite fauna.Aquila Natural History Books · Lochem, NL16,00 €