旧大陆"Hippotherium"的存续:两种欧亚大陆三趾马的修订
Occurrence of"Hippotherium"in the Old World:a revision of two hipparion species in Eurasia
摘要
Abstract
A controversial taxon,Hipparion plocodus,is reviewed in the present study.Hi.plocodus has been confirmed to be a valid species with definite diagnostic characteristics,represented by cranial specimens from Baode,Shanxi Province.The phylogenetic analysis performed in the present study,with a new matrix,shows that Hi.plocodus forms a monophyletic group with a European species,Hippotherium malpassii.Actually,no close relationship between so-called Hm.malpassii and the genus Hippotherium has been identified,and the record of stratigraphic range of this genus in late stage of Late Miocene is currently absent.Herein previously Hi.plocodus and Hm.malpassii have both attributed into"Hipparion"before the discovery of better material.Evolutionary stages and correlative absolute age showed that these two species should derive independently from some primitive clade.During the late stage of the Late Miocene,the development of the Asian summer monsoon enhanced the humidity of China,with forest and wood habitats expanding considerably under this setting.As the result,one Eurasian closed-habitat lineage thus extended its range into China,which had become very suited for it,give rise to"Hi."plocodus.关键词
欧亚三趾马/系统分类修订/系统发育/古动物地理Key words
Eurasian hipparion/systematic revision/phylogeny/paleozoogeography分类
生物学引用本文复制引用
孙博阳,刘艳,王世骐,邓涛..旧大陆"Hippotherium"的存续:两种欧亚大陆三趾马的修订[J].古脊椎动物学报（中英文）,2025,63(1):57-80,24.基金项目
国家重点研发计划(编号:2023YFF0804501)、中国科学院青年创新促进会项目(编号:2021069)和第二次青藏高原综合科学考察研究项目(编号:2019QZKK0705)资助. Two reviewers greatly improve the current manuscript.Jan-Ove R.Ebbestad and Dr.Benjamin Kear(Museum of Evolution of Uppsala University)provided accesses to observations on specimens of the Lagrelius Collection.Dr.Jin Meng and Ms.Judy Galkin(AMNH)provided accesses to observations on specimens of fossil horses.We appreciate all of their contributions.This work was supported by National Key Research and Development Program of China(Grant No.2023YFF0804501),the award of Youth Innovation Promotion Association,Chinese Academy of Sciences(Grant No.2021069),the Second Comprehensive Scientific Expedition on the Tibetan Plateau(2019QZKK0705). （编号:2023YFF0804501）
