A recent discovery from the Carboniferous–Permian transition of the southwest German Saar–Nahe Basin has revealed a medium-sized edaphosaurid skeleton. It is described as Remigiomontanus robustus gen. et sp. nov. Apart from a largely complete dorsal column, showing the typical hyper-elongated spines with lateral tuberculation, few other elements are preserved. Although lacking certain autapomorphies, the unique character combination of this new form strongly suggests an intermediate position between Ianthasaurus and Edaphosaurus. This study presents a revision of the complete European material of Edaphosauridae, counting the newly named genus Bohemiclavulus (type species Naosaurus mirabilis Fritsch, 1895), and a confirmation that Edaphosaurus credneri is an indeterminate juvenile of this most derived genus. Further fragments include a second young juvenile from the Döhlen Basin, east Germany, the lost spine set of Ramodondron from Boskovice Basin, Czech Republic, and a poorly preserved specimen from Autun, France, for which its hitherto parareptilian classification is debated. A renewed dataset is used to carry out a phylogenetic analysis. Exhaustive comparisons allow for a deeper understanding of back sail characters, which on the other hand hamper a phylogenetic resolution for both European and North American taxa. Previously reconstructed faunal provinces of edaphosaurid distribution are not evident from the present knowledge.

中文翻译：

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欧洲的鳞翅目科（Synapsida，Eupelycosauria）及其与北美代表的关系

最近在德国西南萨尔-纳赫盆地的石炭纪-二叠纪过渡带中发现了中等大小的埃达膦龙骨架。它被描述为Remigiomontanusrobustus gen。等。十一月 除了基本上完整的背柱，显示出典型的超长刺和侧结节外，其他元素几乎没有保留。尽管缺乏某些共形体，但这种新形式的独特字符组合强烈暗示了在Ianthasaurus和Edaphosaurus之间的中间位置。这项研究提出了对欧洲鳞翅目科的完整材料的修订，其中包括新命名的Bohemiclavulus属（类型Naosaurus mirabilis类型弗里奇（Fritsch，1895）），并确认大戟科（Edaphosaurus credneri）是这个起源最多的属的不确定幼体。其他碎片包括来自德国东部多伦盆地的第二个少年，来自捷克共和国博斯科维采盆地的Ramodondron丢失的脊柱组，以及来自法国Autun的保存不佳的标本，迄今仍对其准爬行动物分类进行了辩论。使用更新的数据集进行系统发育分析。详尽的比较可以使人们对逆向航行特性有更深入的了解，另一方面，这也不利于欧洲和北美分类群的系统发育解析。从目前的知识来看，以前重建的埃达福隆分布的动物区系并不明显。