Geological age of the Ayukawa Formation (Oshika Group) in the South Kitakami Belt, Northeast Japan based on the ammonoids von Ehiro, Masayuki, Company, Miguel, Takaizumi, Yukihiro, Hanamatsu, Shun-ichi

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Michinoku Amateur Paleontologists' Club von Hikichi, Yasuhiro, Takaizumi, Yukihiro, Suzuki, Yutaro

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Late Devonian and Early Carboniferous ammonoids from the Tobigamori Formation in the Southern Kitakami Massif, Northeast Japan and their stratigraphic significance von Ehiro, Masayuki, Takaizumi, Yukihiro

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Occurrence of Aturia (Cephalopoda) from the Miocene Moniwa Formation of Sendai, Northeast Honshu, Japan and its paleoenvironmental significance von Ehiro, Masayuki, Sato, Masamichi, Takaizumi, Yukihiro

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みちのく古生物研究会(化石研究グループの紹介) von 曵地, 泰博, 高泉, 幸浩, 鈴木, 雄太郎

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The first record of the halitheriine dugongid (Sirenia : Dugongidae) in the western North Pacific Ocean von Kohno, Naoki, Takaizumi, Yukihiro

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Late Devonian and Early Carboniferous ammonoids from the Tobigamori Formation in the Southern Kitakami Massif, Northeast Japan and their stratigraphic significance von EHIRO, M, TAKAIZUMI, Y

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宮城県仙台市の中新統茂庭層より産出した頭足類化石Aturiaとその古環境的意義 von 永広, 昌之, 佐藤, 正道, 高泉, 幸浩

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101. Middle-Late Permian cephalopods from Kyrosawa, Kesenuma City, Southern Kitakami Massif, Northeast Japan von Ehiro, Masayuki, Araki, Hideo, Takaizumi, Yukihiro

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北西太平洋から初めてのハリテリウム亜科の海牛 (Sirenia : Dugongidae) の産出 von 甲能, 直樹, 高泉, 幸浩

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101. 南部北上山地, 気仙沼市黒沢の中〜後期ペルム紀頭足類化石 von 永広, 昌之, 荒木, 英夫, 高泉, 幸浩

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