A small temnospondyl skull from the upper Carboniferous Allegheny Group of Five Points, Ohio, is referred to a new dissorophoid, Palodromeus bairdi n. gen n. sp. The complete skull with mandibles is preserved in counterparts. It is characterized by, (1) elongated slit-like choana; (2) postfrontal, postorbital, and supratemporal bearing a distinct ridge; and (3) reduced parietal only two-thirds the length of the frontal. Phylogenetic analysis confirms a dichotomy between amphibamiforms and olsoniforms and places Palodromeus bairdi n. gen. n. sp. at the base of the olsoniforms, revealing an early stage in the evolution of that clade.UUID: http://zoobank.org/3871e443-7888-4439-a7c1-9463bc4d87ab

中文翻译：

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美国俄亥俄州马霍宁县五点的阿勒格尼组（晚石炭世）的一种新的异形体 temnospondyl

来自俄亥俄州上石炭纪阿勒格尼五点群的一个小的 temnospondyl 头骨被称为一种新的 dissorophoid，白头鹦鹉n. gen n. sp。带有下颌骨的完整头骨保存在对应物中。其特点是，（1）细长的狭缝状的choana；(2) 额后、眶后和颞上具有明显的脊；(3) 顶叶仅减少了额叶长度的三分之二。系统发育分析证实了两栖类和olsoniforms和地方之间的二分法白头鹦鹉n. 将军 n. sp。在olsoniforms的底部，揭示了该进化枝进化的早期阶段。UUID：http://zoobank.org/3871e443-7888-4439-a7c1-9463bc4d87ab