15 0 0 0 OA 瑞浪層群宿洞層(岐阜県瑞浪市釜戸町)よりパレオパラドキシア科の全身骨格の発見
3 0 0 0 OA 瑞浪層群明世層産鰭脚類(ミズナミムカシアシカ)の復元模型制作
- 著者
- 安藤 佑介 徳川 広和 甲能 直樹
- 出版者
- 瑞浪市化石博物館
- 雑誌
- 瑞浪市化石博物館研究報告 (ISSN:03850900)
- 巻号頁・発行日
- vol.49, pp.167-173, 2022-12-27 (Released:2022-12-27)
- 参考文献数
- 12
A paleontological restoration of the early diverging pinniped, enaliarctine gen. et sp. undet., which was described and identified by Kohno et al. (2021), was presented as a 3D model. The form was reconstructed based on MFM18009 (complete skull, distal half of the left mandible, the atlas, distal half of the left humerus, proximal half of the left ulna, the third metacarpus, thoracic vertebrae and ribs) and restored by the last author’s scientific comments.
- 著者
- 甲能 直樹 安藤 佑介 楓 達也
- 出版者
- 瑞浪市化石博物館
- 雑誌
- 瑞浪市化石博物館研究報告 (ISSN:03850900)
- 巻号頁・発行日
- vol.47, pp.125-135, 2020 (Released:2021-04-09)
- 参考文献数
- 25
A pinniped fossil was found at the construction site of the Togari-Tsukiyoshi City Road in Akeyo-cho, Mizunami City, Gifu Prefecture, Japan in September 2020. We briefly report this new discovery of a partial skeletal bones belonging to a single individual (MFM18009), which was recovered from the lowermost part of the Yamanouchi Member of the Akeyo Formation, the Mizunami Group (lower Miocene: ca 18 Ma). MFM18009 is consisted from a complete skull, distal half of the left mandible, the atlas, distal half of the left humerus, proximal half of the left ulna, the third metacarpus, thoracic vertebrae and ribs. MFM18009 seems to belong in the Pteronarctos-Pacificotaria species complex of pinnipediforms, and is provisionally identified as Enaliarctine genus and species undetermined.
- 著者
- 安藤 佑介 糸魚川 淳二
- 出版者
- 日本古生物学会
- 雑誌
- 化石 (ISSN:00229202)
- 巻号頁・発行日
- vol.104, pp.1-2, 2018-09-30 (Released:2019-04-03)
- 著者
- 川瀬 基弘 早瀬 善正 安藤 佑介 西岡 佑一郎
- 出版者
- 軟体動物多様性学会
- 雑誌
- Molluscan diversity (ISSN:18846270)
- 巻号頁・発行日
- vol.3, no.2, pp.83-91, 2012-12
1 0 0 0 OA 瑞浪層群明世層産貝類におけるストロンチウム同位体年代の追加記録
- 著者
- 安藤 佑介 荒岡 大輔 吉村 寿紘 中島 礼
- 出版者
- 瑞浪市化石博物館
- 雑誌
- 瑞浪市化石博物館研究報告 (ISSN:03850900)
- 巻号頁・発行日
- vol.49, pp.119-122, 2022-10-07 (Released:2022-10-07)
- 参考文献数
- 12
Additional strontium isotope ratio (87Sr/86Sr) of molluscs including Crenomytilus grayanus (Dunker), from the Akeyo Formation of the Mizunami Group in Mizunami City, Gifu Prefecture, central Japan are determined. The strontium isotopic ages suggest that the Crenomytilus grayanus-bearing horizon (most-lower part of the Yamanouchi Member, Akeyo Formation) has been deposited at ca. 17.8 Ma. In addition, upper part of the Kubohara Facies (middle part of the Maki Member), Iwamura Group has been deposited at same age of the Yamanouchi Member.
1 0 0 0 OA 古第三紀翼足類(腹足綱, 有殻翼足目)の日本で初めての産出
- 著者
- 安藤 佑介 氏原 温 市原 俊
- 出版者
- 一般社団法人 日本地質学会
- 雑誌
- 地質学雑誌 (ISSN:00167630)
- 巻号頁・発行日
- vol.115, no.4, pp.187-190, 2009-04-15 (Released:2009-09-04)
- 参考文献数
- 24
- 被引用文献数
- 2 2
More than 100 pteropod specimens were collected from each of the Eocene Shikiyama and Oniike formations in the Amakusa area, Kumamoto Prefecture, Southwest Japan. These fossils constitute the first Paleogene pteropod record from Japan. The pteropods from the Shikiyama Formation consist of five species, including Limacina canadaensis Hodgkinson, L. pygmaea (Lamarck), and Praehyalocylis annulata (Tate). The pteropods from the Oniike Formation consist of six species, including Limacina canadaensis, L. lotschi (Tembrock), Creseis hastata (Meyer), C. simplex (Meyer), and Praehyalocylis annulata. Both of these pteropod faunas are characterized by the predominance of Limacina in species diversity and specimen abundance. The faunas are similar to the pteropod faunas from the Middle to Upper Eocene of Europe and the east coast of North America in terms of generic composition and the predominance of Limacina.