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Crocodyliform remains from the Upper Cretaceous (Turonian) Tamagawa Formation, northeastern Japan with preliminary dietary reconstruction through dental microwear texture analysis

文献类型：期刊论文

作者Tai, Kubo2,3; Usami, Kodai3; Hirayama, Ren4; Iijima, Masaya3,5; Winkler, Daniela E.3,6; Ito, Ai1; Uno, Hikaru7; Miyata, Shinya8; Kubo, Mugino O.3
刊名CRETACEOUS RESEARCH
出版日期2025-12-01
卷号176期号:0页码:16
关键词Dental microwear texture analysis Paralligatoridae Kuji group Japan Upper Cretaceous
ISSN号0195-6671
DOI10.1016/j.cretres.2025.106197
英文摘要Here we describe recently recovered crocodyliform remains from the Tamagawa Formation of Kuji Group, Kuji city, northeastern Japan. The material comprises osteoderms, vertebrae, a frontal bone, and isolated teeth. The dorsal paravertebral osteoderms bear a sagittal keel on the posterior half of the element, extending to its caudal margin, which indicates the presence of paralligatorids within the Kuji crocodyliform assemblage. Further, the Kuji crocodyliform assemblage may have consisted of multiple taxa, as the frontal bone lacks the sagittal keel characteristic of paralligatorids. Contemporaneous paralligatorids have been reported from Northeastern China, Mongolia, and Uzbekistan. The discovery of a potential paralligatorid from Kuji, Japan, suggests that paralligatorids were widely distributed across Asia, from coastal to inland regions, during the Late Cretaceous. Furthermore, potential diets of taxa included in the crocodyliform assemblage from Kuji were estimated through dental microwear texture analysis. The dental microwear texture observed in Kuji specimens is distinct from that of piscivorous and small crocodylians (skull length <20 cm), while comparable to that of large crocodylians consuming hard-objects (skull length >20 cm). Considering the existence of a medium-sized species (3 m total length) in the crocodyliform assemblage from Kuji, their diet probably included mid to large sized tetrapods, such as turtles and dinosaurs. (c) 2025 The Author(s). Published by Elsevier Ltd. This is an open access article under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).
WOS关键词PHYLOGENETIC POSITION ; FOOD-HABITS ; ANATOMY ; REPTILE ; ARCHOSAURIA ; MORPHOLOGY ; NILOTICUS ; EVOLUTION ; REVISION ; CHINA
资助项目Japan Society for the Promotion of Science[22K19339]
WOS研究方向Geology ; Paleontology
语种英语
WOS记录号WOS:001540687900001
出版者ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
源URL[http://119.78.100.205/handle/311034/24824]  
专题中国科学院古脊椎动物与古人类研究所
通讯作者Tai, Kubo
作者单位1.Univ Tokyo, Univ Museum, Hongo 7-3-1,Bunkyo Ku, Tokyo 1130033, Japan
2.Waseda Univ, Ctr Data Sci, Nishiwaseda 1-6-1,Shinjuku Ku, Tokyo 1698050, Japan
3.Univ Tokyo, Grad Sch Frontier Sci, Dept Nat Environm Studies, Chiba, Japan
4.Waseda Univ, Sch Int Liberal Studies, Nishiwaseda 1-6-1,Shinjuku Ku, Tokyo 1698050, Japan
5.Chinese Acad Sci, Key Lab Vertebrate Evolut & Human Origins, Inst Vertebrate Paleontol & Paleoanthropol, Beijing, Peoples R China
6.Univ Kiel, Zool Inst, Kiel, Germany
7.Waseda Univ, Res Inst Sci & Engn, Ookubo 3-4-1,Shinjuku Ku, Tokyo 1698555, Japan
8.Josai Univ Educ Corp, Oishi Fossil Gallery Mizuta Mem Museum, 2-3-20 Hirakawa Cho,Chiyoda Ku, Tokyo 10210093, Japan
推荐引用方式
GB/T 7714		 Tai, Kubo,Usami, Kodai,Hirayama, Ren,et al. Crocodyliform remains from the Upper Cretaceous (Turonian) Tamagawa Formation, northeastern Japan with preliminary dietary reconstruction through dental microwear texture analysis[J]. CRETACEOUS RESEARCH,2025,176(0):16.
APA Tai, Kubo.,Usami, Kodai.,Hirayama, Ren.,Iijima, Masaya.,Winkler, Daniela E..,...&Kubo, Mugino O..(2025).Crocodyliform remains from the Upper Cretaceous (Turonian) Tamagawa Formation, northeastern Japan with preliminary dietary reconstruction through dental microwear texture analysis.CRETACEOUS RESEARCH,176(0),16.
MLA Tai, Kubo,et al."Crocodyliform remains from the Upper Cretaceous (Turonian) Tamagawa Formation, northeastern Japan with preliminary dietary reconstruction through dental microwear texture analysis".CRETACEOUS RESEARCH 176.0(2025):16.

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来源：古脊椎动物与古人类研究所

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