Foraminifera source request

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Bartenstein, H.; Malz, H. (2003). Clarifovea n. g. (Toarcium bis Tithonium) und Grandifovea n. g. (Valanginium bis Aptium), zwei neue mesozoische Foraminiferen-Gattungen mit 'ringförmiger' Nabelregion - Clarifovea n. g. (Toarcian to Tithonian) and Grandifovea n. g. (Valanginian to Aptian), two new Mesozoic foraminiferal genera with 'annular' umbilical region. Senckenbergiana Lethaea. 83: 3-13.