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Abstract <p>A new species of discosauriscid seymouriamorphs, <i>Ariekanerpeton kuedensis</i> sp. nov., is described based on the skull of a larval individual from the Klyuchiki locality, Perm Region, Russia. The new form differs from the type species of <i>Ariekanerpeton</i>, <i>A. sigalovi</i> (Tatarinov, 1968), in the structure of the occipital and suborbital regions the skull roof, as well as in the mandible. The specimen from Klyuchiki extends the stratigraphic distribution of the family Discosauriscidae up to the Upper Ufimian–Kazanian of the middle Permian (Kungurian–Roadian interval), provides the first valid evidence of this group in the East European tetrapod associations, and records the existence of the genus <i>Ariekanerpeton</i> outside the Asian region for the first time.</p>

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Discovery of Discosauriscid Seymouriamorphs (Tetrapoda) in the Middle Permian of Eastern Europe

  • 期刊论文

  • 发表日期：

    2025年4月1日

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  • V. V. Bulanov

摘要

Abstract

A new species of discosauriscid seymouriamorphs, Ariekanerpeton kuedensis sp. nov., is described based on the skull of a larval individual from the Klyuchiki locality, Perm Region, Russia. The new form differs from the type species of Ariekanerpeton, A. sigalovi (Tatarinov, 1968), in the structure of the occipital and suborbital regions the skull roof, as well as in the mandible. The specimen from Klyuchiki extends the stratigraphic distribution of the family Discosauriscidae up to the Upper Ufimian–Kazanian of the middle Permian (Kungurian–Roadian interval), provides the first valid evidence of this group in the East European tetrapod associations, and records the existence of the genus Ariekanerpeton outside the Asian region for the first time.