A new stem hynobiid salamander (Urodela, Cryptobranchoidea) from the Upper Jurassic (Oxfordian) of Liaoning Province, China

doi:10.1080/02724634.2019.1588285

NIGPAS OpenIR

	A new stem hynobiid salamander (Urodela, Cryptobranchoidea) from the Upper Jurassic (Oxfordian) of Liaoning Province, China
通讯作者	Jia, Jia(jia_jia@pku.edu.cn) ; Gao, Ke-qin(kqgao@pku.edu.cn)
	Jia, Jia 1,2,3; Gao, Ke-qin 1
	2019-05-09
发表期刊	JOURNAL OF VERTEBRATE PALEONTOLOGY
ISSN	0272-4634
页码	22
摘要	Hynobiids are a group of small- to moderate-sized salamanders living primarily in Asia. They are a primitive crown-group clade, with a poor fossil record. Several hynobiid-like taxa have been discovered from the Lower Cretaceous strata of northern China during the last 20 years, with Liaoxitriton zhongjiani and Nuominerpeton aquilonaris identified as the oldest known stem hynobiids. However, the record of pre-Cretaceous hynobiid-like taxa is only known by Liaoxitriton daohugouensis, of which both the morphology and the congeneric status with L. zhongjiani remain problematic. Here, we report on a new hynobiid-like salamander, Linglongtriton daxishanensis, gen. et sp. nov., on the basis of two specimens from the Upper Jurassic Lanqi/Tiaojishan Formation (similar to 160 Ma) of Liaoning Province, China. Linglongtriton is diagnosed by a unique combination of features revealed by both observation under microscope and micro-computed tomography (mu CT) scan of the holotype, including nasals separated from each other at the midline; prootic, opisthotic, and exoccipital retained as discrete elements; dentary with a lateral groove; articular not ossified; metacarpal III enlarged; a single centrale; and distal tarsals 4 and 5 fused into a single element. Phylogenetic analysis identified Linglongtriton and several other hynobiid-like taxa, including Liaoxitriton daohugouensis, as stem hynobiids, thereby extending the temporal range of the stem by at least 40 Ma-from the Early Cretaceous (Aptian-Barremian) to the Middle Jurassic (Bathonian). Comparative study of Linglongtriton with living and fossil hynobiids sheds new lights on the evolution and developmental mechanisms of several characters, including nasal separation and tarsal elements.
DOI	10.1080/02724634.2019.1588285
收录类别	SCI
语种	英语
关键词[WOS]	CROWN-GROUP SALAMANDER ; WESTERN SIBERIA ; YANLIAO BIOTA ; BONY SKELETON ; COMPARATIVE OSTEOLOGY ; TIAOJISHAN FORMATION ; CAUDATA-HYNOBIIDAE ; FEEDING APPARATUS ; AMPHIBIA URODELA ; INNER-MONGOLIA
资助项目	Shandong Provincial Key Laboratory of Depositional Mineralization & Sedimentary Mineral (Shandong University of Science and Technology)[DMSM2017002] ; Key Laboratory of Economic Stratigraphy and Palaeogeography, Chinese Academy of Sciences (Nanjing Institute of Geology and Palaeontology)[2017KF03] ; National Natural Science Foundation of China[NSFC 41702002] ; National Natural Science Foundation of China[41872008]
WOS研究方向	Paleontology
WOS类目	Paleontology
WOS记录号	WOS:000471578000001
项目资助者	Shandong Provincial Key Laboratory of Depositional Mineralization & Sedimentary Mineral (Shandong University of Science and Technology) ; Key Laboratory of Economic Stratigraphy and Palaeogeography, Chinese Academy of Sciences (Nanjing Institute of Geology and Palaeontology) ; National Natural Science Foundation of China
出版者	TAYLOR & FRANCIS INC
文献类型	期刊论文
条目标识符	http://ir.nigpas.ac.cn/handle/332004/38574
专题	中国科学院南京地质古生物研究所
通讯作者	Jia, Jia; Gao, Ke-qin
作者单位	1.Peking Univ, Sch Earth & Space Sci, 5 Yiheyuan Rd, Beijing 100871, Peoples R China 2.Shandong Univ Sci & Technol, Shandong Prov Key Lab Deposit Mineralizat & Sedim, 579 Qianwangang Rd, Qingdao 266590, Shandong, Peoples R China 3.Chinese Acad Sci, Nanjing Inst Geol & Paleontol, Key Lab Econ Stratig & Palaeogeog, 39 East Beijing Rd, Nanjing 210008, Jiangsu, Peoples R China
推荐引用方式 GB/T 7714	Jia, Jia,Gao, Ke-qin. A new stem hynobiid salamander (Urodela, Cryptobranchoidea) from the Upper Jurassic (Oxfordian) of Liaoning Province, China[J]. JOURNAL OF VERTEBRATE PALEONTOLOGY,2019:22.
APA	Jia, Jia,&Gao, Ke-qin.(2019).A new stem hynobiid salamander (Urodela, Cryptobranchoidea) from the Upper Jurassic (Oxfordian) of Liaoning Province, China.JOURNAL OF VERTEBRATE PALEONTOLOGY,22.
MLA	Jia, Jia,et al."A new stem hynobiid salamander (Urodela, Cryptobranchoidea) from the Upper Jurassic (Oxfordian) of Liaoning Province, China".JOURNAL OF VERTEBRATE PALEONTOLOGY (2019):22.