Feroxichthys panzhouensis sp. nov., a hump-backed colobodontid (Neopterygii, Actinopterygii) from the early Middle Triassic of Panzhou, Guizhou, China

doi:10.7717/peerj.11257

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	Feroxichthys panzhouensis sp. nov., a hump-backed colobodontid (Neopterygii, Actinopterygii) from the early Middle Triassic of Panzhou, Guizhou, China
	Ma, Xin-Ying 1,2,3; Xu, Guang-Hui 2,3; Geng, Bing-He 2,3
刊名	PEERJ
	2021-04-07
卷号	9 页码:22
关键词	Osteology Phylogeny Colobodontidae Neopterygii
ISSN号	2167-8359
DOI	10.7717/peerj.11257
通讯作者	Xu, Guang-Hui(xuguanghui@ivpp.ac.cn)
英文摘要	Neopterygii is a taxonomically diverse clade of ray-finned fishes, including Teleostei, Holostei and closely related fossil taxa. The Colobodontidae is a stem group of large-sized neopterygians with a durophagous feeding adaption from the Middle to Late Triassic marine ecosystems in Europe and South China. Here, we report the discovery of a new colobodontid, Feroxichthys panzhouensis sp. nov., based on a well-preserved specimen from the early Middle Triassic (Anisian) of Panzhou (formerly known as Panxian), Guizhou, China. The discovery extends the geographical distribution of Feroxichthys from eastern Yunnan into western Guizhou, and demonstrates a more rapid diversification of early colobodontids than previously thought. The new species possesses diagnostic features of Feroxichthys (e.g., a fused lacrimal-maxilla), but it is easily distinguished from the type species Feroxichthys yunnanensis and other colobodontids by some derived features on the skull and, especially, the relatively short and deep body with a prominent postcranial hump. This body form, previously unknown in colobodontids, implicates a morphological adaptation to structurally complex habitats in light of ecological studies of modern ray-finned fishes with a similar body form. In addition, the feeding apparatus suggests a more obligate durophagous diet for F. panzhouensis sp. nov. than other colobodontids. Results of a cladistic analysis recover the new species as a sister taxon of F. yunnanensis within the Colobodontidae, and suggest that a hump-backed body form has independently evolved multiple times in Triassic neopterygians. As such, the new finding provides an important addition for our understanding of the morphological and ecological diversity of neopterygian fishes from the Triassic marine ecosystems in South China.
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)[41672001] ; National Natural Science Foundation of China (NSFC)[41688103] ; Key research program of Frontier Sciences of Chinese Academy of Sciences[QYZDB-SSW-DQC040]
WOS研究方向	Science & Technology - Other Topics
语种	英语
出版者	PEERJ INC
WOS记录号	WOS:000637688500014
资助机构	Strategic Priority Research Program (B) of Chinese Academy of Sciences ; National Natural Science Foundation of China (NSFC) ; Key research program of Frontier Sciences of Chinese Academy of Sciences
内容类型	期刊论文
源URL	[http://119.78.100.205/handle/311034/18440]
专题	古脊椎动物与古人类研究所_图书馆1
通讯作者	Xu, Guang-Hui
作者单位	1.Univ Chinese Acad Sci, Beijing, Peoples R China 2.CAS Ctr Excellence Life & Paleoenvironm, Beijing, Peoples R China 3.Chinese Acad Sci, Key Lab Vertebrate Evolut & Human Origins, Inst Vertebrate Paleontol & Paleoanthropol, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Ma, Xin-Ying,Xu, Guang-Hui,Geng, Bing-He. Feroxichthys panzhouensis sp. nov., a hump-backed colobodontid (Neopterygii, Actinopterygii) from the early Middle Triassic of Panzhou, Guizhou, China[J]. PEERJ,2021,9:22.
APA	Ma, Xin-Ying,Xu, Guang-Hui,&Geng, Bing-He.(2021).Feroxichthys panzhouensis sp. nov., a hump-backed colobodontid (Neopterygii, Actinopterygii) from the early Middle Triassic of Panzhou, Guizhou, China.PEERJ,9,22.
MLA	Ma, Xin-Ying,et al."Feroxichthys panzhouensis sp. nov., a hump-backed colobodontid (Neopterygii, Actinopterygii) from the early Middle Triassic of Panzhou, Guizhou, China".PEERJ 9(2021):22.