古脊椎动物学报（中英文）2026，Vol.64Issue(3)：238-253,16.DOI:10.19615/j.cnki.2096-9899.250731
临夏盆地发现与现生火鸡及松鸡亲缘关系较近的鸡形目新化石
A new fossil of Galliformes with close relationship to extant turkey and grouse from Linxia Basin
摘要
Abstract
The Linxia Basin,located in Northwest China at the edge of the Tibetan Plateau,preserves a rich fossil record of mammals and birds.Here,we report an exquisitely preserved skeleton representing a new species of small-bodied phasianid from the Linxia Basin,dated to approximately the latest Miocene to Early Pliocene.Gracilisgallus linxia represents the first discovery in China of a taxon closely related to extant grouse and turkey.The new species exhibits a small body size and slender limb bones.Phylogenetic analysis supports its close relationship with extant grouse(Tetraoninae)and turkey(Meleagridinae).The scapula,carpometacarpus,femur,and tarsometatarsus of Gracilisgallus linxia share morphological similarities with its extant relatives,but diagnostic features—such as relatively long spurs on the tarsometatarsus—support its classification as a distinct genus and species,separate from both turkey and grouse.This fossil provides a Late Miocene to Early Pliocene calibration point for the divergence of the turkey—grouse lineages and reveals complex patterns in their radiation across North America and eastern Asia.关键词
临夏盆地/新生代/鸡形目/雉科/临夏纤骨鸡/系统发育分析/松鸡/火鸡Key words
Linxia Basin/Neogene/Galliformes/Phasianidae/Gracilisgallus linxia/phylogenetic analysis/grouse/turkey分类
生物科学引用本文复制引用
余婷钰,李志恒..临夏盆地发现与现生火鸡及松鸡亲缘关系较近的鸡形目新化石[J].古脊椎动物学报（中英文）,2026,64(3):238-253,16.基金项目
国家自然科学基金(批准号:42172029,42430207)资助. We thank Gao Wei from IVPP for photographing,Zhang Zheng for preparation and Xu Yong for illustration.This work was supported by the National Natural Science Foundation of China(Grant Nos.NSFC 42172029 and 42430207). （批准号:42172029,42430207）
