Hayasaka I. (1939). Spiromphalus, a new Permian genus from the Permian of Japan. <em>Memoirs of the Faculty of Science and Agriculture, Taihoku Imperial University.</em> 22(2):19-23. page(s): 19 [details]
original descriptionHayasaka I. (1939). Spiromphalus, a new Permian genus from the Permian of Japan. <em>Memoirs of the Faculty of Science and Agriculture, Taihoku Imperial University.</em> 22(2):19-23. page(s): 19 [details]
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