Bohemiclavulus gen. nov. Â(type species Naosaurus mirabilis Fritsch, 1895)
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Remigiomontanus robustus gen. et sp. nov.
Frederik Spindler, Sebastian Voigt & Jan Fischer (2019)
Edaphosauridae (Synapsida, Eupelycosauria) from Europe and their relationship to North American representatives.
PalZ (advance online publication)
DOI:
https://doi.org/10.1007/s12542-019-00453-2https://link.springer.com/article/10.1007/s12542-019-00453-2A 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 DÃhlen 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.