The brachiopod fauna of the Chalonnes Limestone (Armorican Massif, France) is famous because of the presence of large, thick-shelled species first described by Oehlert (1881). One of these species originally assigned to Pentamerus davyi Oehlert, 1881 is here revised. External as well as internal characters of the shell allow its attribution to Zdimir robustus (Barrande, 1879), a species from the Trebotov Limestone in the Prague area. This reassignment is consistent with an Upper Emsian age for the Chalonnes Limestone.

中文翻译：

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将Pentamerus davyi Oehlert重新分配给Zdimir Robustus（Barrande）（泥盆纪Brachiopoda）：地层和古地理学意义

Chalonnes石灰石（法国阿莫里肯地块）的腕足动物区系因存在大而厚壳的物种而闻名，这是最早由Oehlert（1881）所描述的。这些物种之一最初分配给1881年的Pentamerus davyi Oehlert，在此进行了修订。贝壳的外部和内部特征使其归因于Zdimirrobustus（Barrande，1879年），该种来自布拉格地区Trebotov石灰石。此项重新分配与Chalonnes石灰石的上艾美时期相一致。