古脊椎动物学报（中英文）2025，Vol.63Issue(1)：1-19,19.DOI:10.19615/j.cnki.2096-9899.241226
广西下泥盆统的肉鳍鱼类化石
Sarcopterygians from the Lochkovian(Lower Devonian)of Nanning,Guangxi,China
摘要
Abstract
Here we report a left cheek plate of Psarolepis,a postparietal shield of Youngolepis,a skull of Diabolepis,and a scale of Styloichthys from the Lianhuashan and Nahkaoling formations(Lochkovian,Lower Devonian)of Nanning,Guangxi.This marks the first report of Diabolepis and Styloichthys beside Qujing,Yunnan,and the latest occurrence of Psarolepis to date.The fossil community displays significant similarities to the Xujiachong Assemblage,and provides new data for the Lower Devonian stratigraphic correlation between southwestern China and northern Vietnam.Given the latest dating constraint based on the conodont evidence,we regard that the Xujiachong Assemblage has a much longer range than previously supposed,extending from the latest Lochkovian to the end of Pragian.We propose that the transition of the Nahkaoling and Lianhuashan formations in Nanning might correspond to the Guijiatun Formation in Qujing.The relatively large size of fish individuals from Guangxi is probably attributed to the increase in the oxygen content of the ocean.关键词
广西南宁/下泥盆统/洛霍考夫期/徐家冲组合/莲花山组/那高岭组/肉鳍鱼类Key words
Nanning,Guangxi/Lochkovian,Lower Devonian/Xujiachong Assemblage,Lianhuashan Formation,Nahkaoling Formation/Sarcopterygians分类
生物学引用本文复制引用
李懋坤,崔心东,朱敏,乔妥..广西下泥盆统的肉鳍鱼类化石[J].古脊椎动物学报（中英文）,2025,63(1):1-19,19.基金项目
国家自然科学基金(批准号:92255301)和云南省张弥曼院士工作站(202205AF150002)资助. We thank ZENG Guangchun for generously providing the material （批准号:92255301）
JIA Liantao for taking photographs （）
ZHANG Jie for field work （）
LU Xiufen,XIONG Cuihua and XIONG Cuiying for specimen preparation,and HOU Yemao and YIN Pengfei for the computed tomography scanning and rendering.This work was supported by the National Natural Science Foundation of China(92255301). （92255301）
