Elements of the jaw apparatuses of the ammonite genus Kepplerites (Ammonoidea: Stephanoceratoidea, Kosmoceratidae, Keppleritinae) are described from two Upper Bathonian and one Lower Callovian localities of the Russian Platform. The lower jaws (aptychi), based on their size and shape can be assigned to two groups and certainly belonged to the co-occurring macroconchs K. (Kepplerites) and theirs microconchs K. (Toricellites). It is established that the presence or absence of tuberculate ornamentation on the surface calcite layer in the studied kosmoceratid aptychi (and accordingly the assignment of the aptychi of kosmoceratids to Granulaptychus-type or Praestriaptychus-type) is a result of burial and fossilization in different settings. Most likely all Kosmoceratidae had lower jaws of the Granulaptychus-type, apparently like the related subfamily Garantianinae (family Stephanoceratidae). For the first time, upper jaws of cephalopods supposedly also belonging to the ammonites of genus Kepplerites are described from the Bathonian Stage.

从俄罗斯平台的两个上巴东地区和一个下卡洛维地区描述了磷灰石属开普勒岩（Ammonoidea：Stephanoceratoidea，Kosmoceratidae，Keppleritinae）的颌骨装置的元素。下部钳口（aptychi），根据它们的大小和形状可以分为两组，当然属于共现macroconchs K.（Kepplerites）和他们的microconchs K.（Toricellites）。可以确定的是，在研究的科莫斯梯ati目y虫的表面方解石层上存在或不存在结节状装饰物（因此，科斯莫尔ati突科目的y虫目被分配为肉豆蔻类或古麦芽菜类）是埋葬和化石作用不同的结果。 。最有可能的是，所有Kosmoceratidae的下颌都具有Granulaptychus类型的下颚，显然与相关的Garantianinae亚科（Stephanoceratidae）相似。从巴东期开始，首次描述了据称也属于开普勒岩属的菊石的头足类的上颚。