The Early Cretaceous frog Genibatrachus from China: Osteology, development, and palaeogeographic relations

doi:10.1007/s12549-023-00579-x

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	The Early Cretaceous frog Genibatrachus from China: Osteology, development, and palaeogeographic relations
	Rocek, Zbynek 1,2; Dong, Liping 1,3; Wang, Yuan 1,3
	2023-04-27
发表期刊	PALAEOBIODIVERSITY AND PALAEOENVIRONMENTS
ISSN	1867-1594
页码	27
通讯作者	Rocek, Zbynek(rocek@gli.cas.cz)
摘要	A thorough anatomical description of the Early Cretaceous frog Genibatrachus is presented, based on 84 fully grown adults and 75 metamorphosing larvae and juveniles. The most distinguishing cranial characters of the adults are premaxillae with a bifurcated facial portion, a pair of frontoparietals contacting one another through a median suture posteriorly but separated by a median fontanelle anteriorly, and free palatines. The postcranial skeleton is characterised by eight amphicoelous presacral vertebrae and an anteriorly convex sacral vertebra, by three pairs of free ribs on V-2-V-4 (those on V-2 small and hook-like, and those on V-3 provided with spike-like uncinate processes), by poorly ossified caput humeri even in fully grown adults, praepollex consisting of two segments (the distal one being strongly expanded), and by the tibiale and fibulare fused together at both ends. The development of Genibatrachus is characterised by the same degree of ossification in the forelimbs and hind limbs, no apparent developmental gradient within the vertebral column, and a pelvic girdle arising within the sacral region of the vertebral column, not behind it. The posteromedial processes of the hyoid ossify early, before the end of metamorphosis (when the vestigial tail is still present). The end of metamorphosis is marked by the establishment of a sutural contact between the ilia. The parahyoid is poorly ossified, relatively common among juveniles (from SVL 24 mm), but not reliably discerned in fully grown adults. Genibatrachus seems to be related to coeval Hyogobatrachus and Tambabatrachus from Japan, and to extant Alytoidea, but differs from Liaobatrachus (e.g. by the number of presacral vertebrae). Some skeletal characteristics (e.g. bicondylar sacro-urostylar joint) suggest that Genibatrachus was capable of jumping.
关键词	Anura Early Cretaceous China Osteology Development
DOI	10.1007/s12549-023-00579-x
关键词[WOS]	ILIO-SACRAL ARTICULATION ; JEHOL BIOTA ; ANURANS ; LAGERSTATTE ; MORPHOLOGY ; EVOLUTION ; AMPHIBIA ; PATTERNS ; ORIGIN
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[42288201] ; Strategic Priority Research Programme (B) of the Chinese Academy of Sciences[XDB 18000000] ; Institute of Geology of the Czech Academy of Sciences[RVO67985831] ; Chinese Academy of Sciences[2017VBA0035] ; Chinese Academy of Sciences[2019VBA0025]
项目资助者	National Natural Science Foundation of China ; Strategic Priority Research Programme (B) of the Chinese Academy of Sciences ; Institute of Geology of the Czech Academy of Sciences ; Chinese Academy of Sciences
WOS研究方向	Biodiversity & Conservation ; Paleontology
WOS类目	Biodiversity Conservation ; Paleontology
WOS记录号	WOS:000977802700001
出版者	SPRINGER HEIDELBERG
引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.205/handle/311034/22470
专题	中国科学院古脊椎动物与古人类研究所
通讯作者	Rocek, Zbynek
作者单位	1.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Key Lab Vertebrate Evolut & Human Origins, Beijing 100044, Peoples R China 2.Czech Acad Sci, Inst Geol, Lab Paleobiol, Rozvojova 135, Prague 16500, Czech Republic 3.Chinese Acad Sci, Ctr Excellence Life & Paleoenvironm, Beijing 100044, Peoples R China
推荐引用方式 GB/T 7714	Rocek, Zbynek,Dong, Liping,Wang, Yuan. The Early Cretaceous frog Genibatrachus from China: Osteology, development, and palaeogeographic relations[J]. PALAEOBIODIVERSITY AND PALAEOENVIRONMENTS,2023:27.
APA	Rocek, Zbynek,Dong, Liping,&Wang, Yuan.(2023).The Early Cretaceous frog Genibatrachus from China: Osteology, development, and palaeogeographic relations.PALAEOBIODIVERSITY AND PALAEOENVIRONMENTS,27.
MLA	Rocek, Zbynek,et al."The Early Cretaceous frog Genibatrachus from China: Osteology, development, and palaeogeographic relations".PALAEOBIODIVERSITY AND PALAEOENVIRONMENTS (2023):27.