中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Conodont-bearing bromalites from South China: Evidence for multiple predations on conodonts in the Early Triassic marine ecosystem

文献类型:期刊论文

作者Yao, Mingtao4; Sun, Zuoyu4; Ji, Cheng2,3; Liu, Shuang1; Zhou, Min4; Jiang, Dayong4
刊名PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
出版日期2024-10-01
卷号651页码:15
关键词Coprolites Regurgitalites Predator-prey interactions Food webs Biotic recovery
ISSN号0031-0182
DOI10.1016/j.palaeo.2024.112377
英文摘要

Bromalites are important indicators of dietary habits and potential predator-prey relationships, therefore, they largely enhance our comprehension of trophic interactions within marine ecosystems. A multi-disciplinary investigation was conducted on conodont-bearing bromalites discovered from the 'fish-bearing nodule layers' of the uppermost Lower Qinglong Formation (Longtan section, Nanjing, South China) that typifies one of the peri-Pangean distributed 'Triassic early Fish Faunas' (TEFF). The conodont species Scythogondolella milleri within some bromalites, visualized using X-ray microtomography, pinpoints the latest Smithian (Olenekian, Early Triassic) in age. These bromalites are described and classified into six distinct morphotypes: M1 (slender), M2 (raindrop-like), M3 (tadpole-like), M4 (kidney-like), M5 (folded), and M6 (plate-like). Morphological, inclusionbased, and geochemical analyses allow us to identify three morphotypes as coprolites with carbonaceous or phosphatic matrices. Conversely, the other three morphotypes, characterized by a scarcity of matrix material, are inferred to be regurgitalites. They were inferred to be likely produced by ammonoids, thylacocephalans, actinopterygians, and coelacanths. Subsequently, a trophically multileveled (at least 5 levels) end-Smithian marine ecosystem is reconstructed, in which multiple predators within higher trophic levels, including predatory invertebrates (e.g., ammonoids, crustaceans) and predatory fishes of different taxa, have heavy predation on conodonts. Under these conditions, conodonts, who are ecologically diverse, small-sized macrophagous predators or scavengers with a benthic or pelagic lifestyle, are posited to be an important food source for higher trophic level predators in this ecosystem. Furthermore, multiple predators of higher trophic levels preying on conodonts, alongside the consensus that conodonts have suffered modest losses during the end-Permian mass extinction (EPME) and dramatically re-diversified thereafter, implies that conodonts had most likely served as a key trophic linkage between pelagic and benthic food webs in the Early Triassic marine ecosystem, which was dominated by nektons, particularly fishes.

WOS关键词SULFUR MOUNTAIN FORMATION ; UPPER ORDOVICIAN ; ANHUI PROVINCE ; BODY-SIZE ; COPROLITES ; FISH ; DIVERSITY ; FOOD ; CHAOHU ; RECONSTRUCTION
资助项目National Natural Science Foundation of China[42172009] ; National Natural Science Foundation of China[41920104001] ; National Natural Science Foundation of China[41972003] ; China Geological Survey[121201102000150012-09] ; State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, CAS[123107] ; State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, CAS[143108] ; State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, CAS[173123] ; State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, CAS[20182107] ; China Scholarship Council[202206010129]
WOS研究方向Physical Geography ; Geology ; Paleontology
语种英语
WOS记录号WOS:001281682300001
出版者ELSEVIER
资助机构National Natural Science Foundation of China ; China Geological Survey ; State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, CAS ; China Scholarship Council
源URL[http://ir.nigpas.ac.cn/handle/332004/44123]  
专题中国科学院南京地质古生物研究所
通讯作者Sun, Zuoyu
作者单位1.Natl Nat Hist Museum China, Beijing 100050, Peoples R China
2.Chinese Acad Sci, Ctr Excellence Life & Paleoenvironment, 39 East Beijing Rd, Nanjing 210008, Peoples R China
3.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol & Stratig, 39 East Beijing Rd, Nanjing 210008, Peoples R China
4.Peking Univ, Dept Geol & Geol Museum, Lab Orogen Belt & Crustal Evolut, Minist Educ, Yiheyuan St 5, Beijing 100871, Peoples R China
推荐引用方式
GB/T 7714
Yao, Mingtao,Sun, Zuoyu,Ji, Cheng,et al. Conodont-bearing bromalites from South China: Evidence for multiple predations on conodonts in the Early Triassic marine ecosystem[J]. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,2024,651:15.
APA Yao, Mingtao,Sun, Zuoyu,Ji, Cheng,Liu, Shuang,Zhou, Min,&Jiang, Dayong.(2024).Conodont-bearing bromalites from South China: Evidence for multiple predations on conodonts in the Early Triassic marine ecosystem.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,651,15.
MLA Yao, Mingtao,et al."Conodont-bearing bromalites from South China: Evidence for multiple predations on conodonts in the Early Triassic marine ecosystem".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 651(2024):15.

入库方式: OAI收割

来源:南京地质古生物研究所

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