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Middle Jurassic stem hynobiids from China shed light on the evolution of basal salamanders
Jia, Jia1,2,3; Anderson, Jason S.3; Gao, Ke-Qin1
2021-07-23
Source PublicationISCIENCE
Volume24Issue:7Pages:20
Abstract

The Hynobiidae are an early-diverging clade of crown-group salamanders (urodeles) with an important bearing on the evolution of urodeles. Paleobiology and early-branching patterns of the Hynobiidae remain unclear owing to a poorly documented fossil record. We reported a newly referred specimen to the stem hynobiid, originally named as "Liaoxitriton daohugouensis,'' but here as Neimengtriton daohugouensis comb. nov., and predates the previously estimated origination time of Hynobiidae for at least 8 Myr. We interpret N. daohugouensis as semiaquatic at the adult stage, a previously unknown paleoecological preference among Mesozoic salamanders. Phenotypic variations of N. daohugouensis enlighten an unrecognized association between caudosacral vertebrae and fertilization modes in the early evolution of urodeles. Our cladistic analyses based on morphological characters not only recognize several stem hynobiids and establish Panhynobia nomen cladinovum for the total-group hynobiids but also shed light on the sequential evolution of morphological features in this primitive urodele clade.

DOI10.1016/j.isci.2021.102744
Indexed BySCI
Language英语
WOS KeywordCROWN-GROUP SALAMANDER ; CAUDATA HYNOBIIDAE ; INNER-MONGOLIA ; DAOHUGOU BIOTA ; FAMILY HYNOBIIDAE ; WESTERN SIBERIA ; AMPHIBIA ; PHYLOGENY ; URODELA ; TEMNOSPONDYLI
Funding ProjectNational Natural Science Foundation of China[NSFC 41702002] ; National Natural Science Foundation of China[41872008] ; State Key Laboratory of Palaeobiology and Stratigraphy (Nanjing Institute of Geology and Palaeontology, CAS)[193111]
WOS Research AreaScience & Technology - Other Topics
WOS SubjectMultidisciplinary Sciences
WOS IDWOS:000677580600050
Funding OrganizationNational Natural Science Foundation of China ; State Key Laboratory of Palaeobiology and Stratigraphy (Nanjing Institute of Geology and Palaeontology, CAS)
PublisherCELL PRESS
Document Type期刊论文
Identifierhttp://ir.nigpas.ac.cn/handle/332004/38487
Collection中国科学院南京地质古生物研究所
Corresponding AuthorJia, Jia; Gao, Ke-Qin
Affiliation1.Peking Univ, Sch Earth & Space Sci, 5 Yiheyuan Rd, Beijing 100871, Peoples R China
2.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol & Stratig, 39 East Beijing Rd, Nanjing 210008, Jiangsu, Peoples R China
3.Univ Calgary, Dept Comparat Biol & Expt Med, 3330 Hosp Dr, Calgary, AB T2N 4N1, Canada
First Author AffilicationNanjing Institute of Geology and Palaeonotology,CAS
Corresponding Author AffilicationNanjing Institute of Geology and Palaeonotology,CAS
Recommended Citation
GB/T 7714
Jia, Jia,Anderson, Jason S.,Gao, Ke-Qin. Middle Jurassic stem hynobiids from China shed light on the evolution of basal salamanders[J]. ISCIENCE,2021,24(7):20.
APA Jia, Jia,Anderson, Jason S.,&Gao, Ke-Qin.(2021).Middle Jurassic stem hynobiids from China shed light on the evolution of basal salamanders.ISCIENCE,24(7),20.
MLA Jia, Jia,et al."Middle Jurassic stem hynobiids from China shed light on the evolution of basal salamanders".ISCIENCE 24.7(2021):20.
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