The oldest species of Peltoperleidus (Louwoichthyiformes, Neopterygii) from the Middle Triassic (Anisian) of China, with phylogenetic and biogeographic implications

doi:10.7717/peerj.12225

IVPP-IR > 中科院古脊椎所（2000年以后）

	The oldest species of Peltoperleidus (Louwoichthyiformes, Neopterygii) from the Middle Triassic (Anisian) of China, with phylogenetic and biogeographic implications
	Xu, Guang-Hui1,2
	2021-09-29
发表期刊	PEERJ
ISSN	2167-8359
卷号	9 页码:26
通讯作者	Xu, Guang-Hui(xuguanghui@ivpp.ac.cn)
摘要	The previously alleged 'perleidid' genus Peltoperleidus is a stem-neopterygian fish taxon with two or three horizontal rows of notably deepened flank scales. Until recently, members of this genus were known only from the Ladinian (late Middle Triassic) or near the Anisian/Ladinian boundary (similar to 242 Ma) in southern Switzerland and northern Italy. Here, I report the discovery of a new species of the genus, Peltoperleidus asiaticus sp. nov., based on three well-preserved specimens from the Anisian (early Middle Triassic, similar to 244 Ma) of Luoping, eastern Yunnan, China. The discovery extends the geological range of Peltoperleidus by approximately two million years and documents the first record of the genus in Asia. Similar to its relatives (represented by P. macrodontus) from Europe, P. asiaticus sp. nov. is likely a small-sized durophagous predator with dentition combining grasping and crushing morphologies. Results of a cladistic analysis unite four species of Peltoperleidus as a monophyletic group within the Louwoichthyiformes, and suggest that the presence of two horizontal rows of notably deepened scales was independently evolved in Peltoperleidus and another stem-neopterygian taxon Altisolepis. P. asiaticus sp. nov. is nested at the base of Peltoperleidus, and a new family Peltoperleididae is proposed for the genus, contrasting the previous placement of Peltoperleidus in the poorly defined, paraphyletic Perleididae'. Comparative studies of the basal peltoperleidid from China with its younger relatives from Europe provide new insights into the evolutionary origin and paleogeographic distribution of this Glade.
关键词	Osteology Phylogeny Louwoichthyiformes Neopterygii Triassic
DOI	10.7717/peerj.12225
关键词[WOS]	YUNNAN PROVINCE ; PROSANTO-FORMATION ; ACTINOPTERYGII ; FISH ; OSTEICHTHYES ; EVOLUTION ; GENUS ; PERLEIDIFORMES ; SWITZERLAND ; DIVERSITY
收录类别	SCI
语种	英语
资助项目	Strategic Priority Research Program (B) of Chinese Academy of Sciences[XDB 26000000] ; Strategic Priority Research Program (B) of Chinese Academy of Sciences[18000000] ; National Natural Science Foundation of China (NSFC)[42172008] ; National Natural Science Foundation of China (NSFC)[41672001] ; National Natural Science Foundation of China (NSFC)[41688103]
项目资助者	Strategic Priority Research Program (B) of Chinese Academy of Sciences ; National Natural Science Foundation of China (NSFC)
WOS研究方向	Science & Technology - Other Topics
WOS类目	Multidisciplinary Sciences
WOS记录号	WOS:000707237000004
出版者	PEERJ INC
引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.205/handle/311034/19035
专题	中科院古脊椎所（2000年以后）
通讯作者	Xu, Guang-Hui
作者单位	1.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Key Lab Vertebrate Evolut & Human Origins, Beijing, Peoples R China 2.CAS Ctr Excellence Life & Paleoenvironm, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Xu, Guang-Hui. The oldest species of Peltoperleidus (Louwoichthyiformes, Neopterygii) from the Middle Triassic (Anisian) of China, with phylogenetic and biogeographic implications[J]. PEERJ,2021,9:26.
APA	Xu, Guang-Hui.(2021).The oldest species of Peltoperleidus (Louwoichthyiformes, Neopterygii) from the Middle Triassic (Anisian) of China, with phylogenetic and biogeographic implications.PEERJ,9,26.
MLA	Xu, Guang-Hui."The oldest species of Peltoperleidus (Louwoichthyiformes, Neopterygii) from the Middle Triassic (Anisian) of China, with phylogenetic and biogeographic implications".PEERJ 9(2021):26.