江西萍乡杨家湾2号洞晚更新世野猪化石研究
New fossils of Late Pleistocene Sus scrofa from Yangjiawan Cave 2,Jiangxi,China
摘要
Abstract
The YJW(Yangjiawan)Cave 2 of Pingxiang in Jiangxi Province is a karst cave that developed in the Permian limestone of the Changxing Formation,which is filled with clay and grit of Late Pleistocene age.Six excavations have been conducted at the site since 2015.More than ten thousand mammalian fossils have been unearthed,and the wild boar fossils account for approximately 49％,which represents the richest wild boar fossil tooth collection of Pleistocene age in southern China.This study focuses on the studies of the canine teeth and the third molars,and mainly compares fossils of Sus peii and S.xiaozhu in South China and the data of extant S.scrofa respectively in dental morphology and odontometric data analyses which includes scatter plot analysis,regression analysis,coefficient of variation analysis and linear discriminant analysis.The typical scrofic type of the male's lower canine teeth confirmed the identification of the suid fossils from YJW Cave 2 as S.scrofa.Although the male's lower canines,the M2s and m3s,are among the most variable teeth in sizes,they stay in the ranges of S.scrofa;furthermore,the scatterplots of both the upper and lower third molars form two distinct clusters respectively,which can probably be attributed to sexual dimorphism rather than resulting from a mixture of different suid species.The post-Early Pleistocene suid fauna in southern China is almost only composed of S.scrofa,which is quite different from the adjacent Southeast Asia where the suid fauna is quite taxonomically diversified and dominated by the verrucosic type.关键词
江西萍乡杨家湾2号洞/晚更新世/野猪/牙齿/种内变异/性双型Key words
Yangjiawan Cave 2,Pingxiang,Jiangxi/Late Pleistocene/Sus scrofa/teeth/intraspecific variation/sexual dimorphism分类
生物科学引用本文复制引用
孙吉嘉,张贝,陈曦,邓里,文军,同号文..江西萍乡杨家湾2号洞晚更新世野猪化石研究[J].古脊椎动物学报,2021,59(1):64-80,17.基金项目
中国科学院战略性先导科技专项(B类)(编号:XDB26000000)、国家自然科学基金(批准号:41572003)和中国科学院古生物化石发掘与修理专项资助.We would like to thank the following institutions and people for their helps:The Cultural Relics Bureau of Jiangxi （B类）
Bureau of Culture,Radio,Television and Press and Publication of Pingxiang （）
Bureau of Culture,Radio,Television and Press and Publication of Shangli County for strong supports to the field survey and excavations （）
Mr.Yang Zhangqian and his family for providing fossil clues and various conveniences （）
Mr.Yang Jingbo and his family for providing convenient living conditions （）
Dr.Wang Qiang for the pre-contact work （）
Dr.Zhao Keliang,Dr.Ge Junyi,and Mr.Yang Qingjiang for participating partial field work and the sampling （）
Liu Yuchun,Li Yan,Xiang Fei,Peng Wei,Li Wentao,Zhou Yunsong,Liu Guijun and Luo Na et al.from Pingxiang Museum for digging （）
Cui Xindong for providing assistance in data analysis （）
Cai Jiachen for photo processing （）
Prof.Van der Made J.for sharing bibliography and fruitful discussions,and Prof.Dong Wei and Dr.Hou Sukuan for critical reviews of the manuscript.This work was supported by the Strategic Priority Research Program of Chinese Academy of Sciences(XDB26000000)and the National Natural Science Foundation of China(41572003)as well as the Special Fund for Fossil Excavation and Preparation,CAS. （XDB26000000）
