A Mesozoic fossil lagerstatte from 250.8 million years ago shows a modern-type marine ecosystem

• 成果类型: Article
• 署名作者: Dai, Xu; Davies, Joshua H. F. L.; Yuan, Zhiwei; Brayard, Arnaud; Ovtcharova, Maria; Xu, Guanghui; Liu, Xiaokang; Smith, Christopher P. A.; Schweitzer, Carrie E.; Li, Mingtao; Perrot, Morgann G.; Jiang, Shouyi; Miao, Luyi; Cao, Yiran; Yan, Jia; Bai, Ruoyu; Wang, Fengyu; Guo, Wei; Song, Huyue; Tian, Li; Dal Corso, Jacopo; Liu, Yuting; Chu, Daoliang; Song, Haijun
• 署名单位: China University of Geosciences; Universite Bourgogne Europe; Centre National de la Recherche Scientifique (CNRS); University of Quebec; University of Quebec Montreal; University of Geneva; Chinese Academy of Sciences; Institute of Vertebrate Paleontology & Paleoanthropology, CAS; University System of Ohio; Kent State University; Kent State University Stark; Linyi University; McGill University; Henan University of Engineering
• 刊物名称: SCIENCE
• ISSN/ISSBN: 0036-9080
• DOI: 10.1126/science.adf1622
• 发表日期: 2023-02-10
• 页码: 567-572
• 关键词: anhui province; luoping biota; RECOVERY; CHINA; actinopterygii; assemblages; pattern; chaohu; fishes; size

摘要

Finely preserved fossil assemblages (lagerstatten) provide crucial insights into evolutionary innovations in deep time. We report an exceptionally preserved Early Triassic fossil assemblage, the Guiyang Biota, from the Daye Formation near Guiyang, South China. High-precision uranium-lead dating shows that the age of the Guiyang Biota is 250.83 +0.07/-0. 06 million years ago. This is only 1.08 +/- 0.08 million years after the severe Permian-Triassic mass extinction, and this assemblage therefore represents the oldest known Mesozoic lagerstatte found so far. The Guiyang Biota comprises at least 12 classes and 19 orders, including diverse fish fauna and malacostracans, revealing a trophically complex marine ecosystem. Therefore, this assemblage demonstrates the rapid rise of modern-type marine ecosystems after the Permian-Triassic mass extinction.