In the Zagros Basin (southwestern Iran), a 270 m thick section of shales, marls, marly limestones and limestones of the Kazhdumi Formation has yielded a diverse ammonite fauna which allowed for a detailed biostratigraphic zonation. Aptian ammonites of the families Deshayesitidae and Parahoplitidae occur indicating a latest early to late Aptian age. Albian Douvilleiceratida, Lyelliceratidae and Brancoceratidae indicate early, middle and late Albian age. Their range and generic and specific determinations are tabulated and illustrated.

中文翻译：

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伊朗扎格罗斯盆地的 Kazhdumi 组（下白垩统，上阿普蒂安 - 上阿尔比安）

在 Zagros 盆地（伊朗西南部），Kazhdumi 组的 270 m 厚的页岩、泥灰岩、泥灰质石灰岩和石灰岩产生了多样化的菊石动物群，可以进行详细的生物地层分区。Deshayesitidae 和 Parahoplitidae 科的 Aptian 菊石出现表明最晚的早到晚 Aptian 时代。Albian Douvilleiceratida、Lyelliceratidae 和 Brancoceratidae 表示早、中和晚的阿尔比时代。它们的范围以及一般和特定的确定被列表和说明。