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Comparative osteology of the hynobiid complexLiua-Protohynobius-Pseudohynobius(Amphibia, Urodela): ROMAN NUMERAL ONE. Cranial anatomy ofPseudohynobius
Jia, Jia1,2; Gao, Ke-Qin1; Jiang, Jian-ping3; Bever, Gabriel S.4; Xiong, Rongchuan5; Wei, Gang6
2020-09-22
Source PublicationJOURNAL OF ANATOMY
ISSN0021-8782
Pages30
Abstract

Hynobiidae are a clade of salamanders that diverged early within the crown radiation and that retain a considerable number of features plesiomorphic for the group. Their evolutionary history is informed by a fossil record that extends to the Middle Jurassic Bathonian time. Our understanding of the evolution within the total group of Hynobiidae has benefited considerably from recent discoveries of stem hynobiids but is constrained by inadequate anatomical knowledge of some extant forms.Pseudohynobiusis a derived hynobiid clade consisting of five to seven extant species living endemic to southwestern China. Although this clade has been recognized for over 37 years, osteological details of these extant hynobiids remain elusive, which undoubtedly has contributed to taxonomic controversies over the hynobiid complexLiua-Protohynobius-Pseudohynobius. Here we provide a bone-by-bone study of the cranium in the five extant species ofPseudohynobius(Ps. flavomaculatus,Ps. guizhouensis,Ps. jinfo,Ps. kuankuoshuiensisandPs. shuichengensis) based on x-ray computer tomography data for 18 specimens. Our results indicate that the cranium in each of these species has a combination of differences in morphology, proportions and articulation patterns in both dermal and endochondral bones. Our study establishes a range of intraspecific differences that will serve as organizing hypotheses for future studies as more extensive collections of these species become available. Morphological features in the cranium for terrestrial ecological adaptation in Hynobiidae are summarized. Based on the results, we also discuss the evolution and development of several potential synapomorphies of Hynobiidae, including features of the orbitosphenoid and articular.

Keywordcranial osteology development evolution Hynobiidae Pseudohynobius salamander terrestrial adaptation
DOI10.1111/joa.13311
Indexed BySCI
Language英语
WOS KeywordGENUS PSEUDOHYNOBIUS CAUDATA ; FEEDING APPARATUS ; AMPHIBIA URODELA ; INNER-MONGOLIA ; SALAMANDERS ; PLETHODONTIDAE ; MORPHOLOGY ; SKULL ; MITOCHONDRIAL ; EVOLUTION
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] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA19050201] ; Construction of Basic Conditions Platform of Sichuan Science and Technology Department[2019JDPT0020]
WOS Research AreaAnatomy & Morphology
WOS SubjectAnatomy & Morphology
WOS IDWOS:000571710200001
Funding OrganizationNational Natural Science Foundation of China ; State Key Laboratory of Palaeobiology and Stratigraphy (Nanjing Institute of Geology and Palaeontology, CAS) ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Construction of Basic Conditions Platform of Sichuan Science and Technology Department
PublisherWILEY
Document Type期刊论文
Identifierhttp://ir.nigpas.ac.cn/handle/332004/32565
Collection中国科学院南京地质古生物研究所
Corresponding AuthorJia, Jia; Gao, Ke-Qin; Jiang, Jian-ping
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, Nanjing, Peoples R China
3.Chinese Acad Sci, Chengdu Inst Biol, Chengdu 610041, Sichuan, Peoples R China
4.Johns Hopkins Univ, Sch Med, Ctr Funct Anat & Evolut, Baltimore, MD USA
5.Liupanshui Normal Univ, Dept Life Sci, Liupanshui, Peoples R China
6.Guiyang Coll, Biodivers Conservat Key Lab, Guiyang, Peoples R China
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,Gao, Ke-Qin,Jiang, Jian-ping,et al. Comparative osteology of the hynobiid complexLiua-Protohynobius-Pseudohynobius(Amphibia, Urodela): ROMAN NUMERAL ONE. Cranial anatomy ofPseudohynobius[J]. JOURNAL OF ANATOMY,2020:30.
APA Jia, Jia,Gao, Ke-Qin,Jiang, Jian-ping,Bever, Gabriel S.,Xiong, Rongchuan,&Wei, Gang.(2020).Comparative osteology of the hynobiid complexLiua-Protohynobius-Pseudohynobius(Amphibia, Urodela): ROMAN NUMERAL ONE. Cranial anatomy ofPseudohynobius.JOURNAL OF ANATOMY,30.
MLA Jia, Jia,et al."Comparative osteology of the hynobiid complexLiua-Protohynobius-Pseudohynobius(Amphibia, Urodela): ROMAN NUMERAL ONE. Cranial anatomy ofPseudohynobius".JOURNAL OF ANATOMY (2020):30.
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