Guangyuanichnus majianus n. igen. n. isp., a large, complex burrow system from the Lower Devonian Pingyipu Formation of the northwestern Yangtze platform, South China

doi:10.1016/j.palwor.2022.12.002

	Guangyuanichnus majianus n. igen. n. isp., a large, complex burrow system from the Lower Devonian Pingyipu Formation of the northwestern Yangtze platform, South China
	Zhang, Xiao-Le 2,3; Wang, Yi 3; Liu, Jian-Bo 1; Xu, Hong-He 3
刊名	PALAEOWORLD
	2024-03-01
卷号	33 期号:1 页码:74-91
关键词	Trace fossil bivalve burrow system morphological reconstruction paleoecology ecological engineering
ISSN号	1871-174X
DOI	10.1016/j.palwor.2022.12.002
通讯作者	Zhang, Xiao-Le(xlzh@nigpas.ac.cn)
英文摘要	A large, three-dimensional burrow system with a maximum vertical extension of 34 cm and a maximum covering area of 40 x 50 cm is reported from the Lower Devonian Pingyipu Formation of the northwestern Yangtze platform, South China. The burrow system, erected as Guangyuanichnus majianus n. igen. n. isp., is composed of two elements, i.e., a basal part that consists of several arcuate burrows, and an upper part emerging from the distal part of each arcuate burrow, which consists of radial, horizontal to subhorizontal spreite bodies in multiple levels in the substrate. The morphologic and taphonomic features of the basal and upper parts, the comparison of ecological and behavioral characters as well as the resulting burrows among various groups suggest that the burrow system was probably constructed by an unknown group of deposit-feeding bivalves. These animals burrowed to a medium to deep tier in the shoreface setting, where they constructed the basal arcuate burrows, and extended the agile siphon far out of the burrow to systematically exploit surficial materials for consumption. The behavior of the tracemaker and resulting trace fossils closely resemble those of modern and ancient tellinacean bivalves, which most likely represents a behavioral convergence. G. majianus probably represents some of the earliest bivalves that occupied a relatively deep tier and conducted a siphon-feeding strategy, a functional innovation well prior to the radiation of siphonfeeding infaunal bivalves during the Mesozoic. The presence of G. majianus suggests that large, deep burrowers tended to cause more dramatic impacts in substrate properties than other major Paleozoic bioturbators, and that they could be responsible for the elevated environmental effects of bioturbation as has been observed in strata younger than the latest Silurian. (c) 2022 Elsevier B.V. and Nanjing Institute of Geology and Palaeontology, CAS. All rights reserved.
资助项目	State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences[20192112] ; State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Wuhan[GBL22002] ; National Natural Science Foundation of China[42172003] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDB26000000]
WOS关键词	BIVALVE TRACE FOSSILS ; FUNCTIONAL-MORPHOLOGY ; TIDAL-FLAT ; ECHIURAN ; BEHAVIOR ; EVOLUTION ; BIOTURBATION ; ICHNOTAXONOMY ; ECOLOGY ; SURFACE
WOS研究方向	Paleontology
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:001174055100001
资助机构	State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences ; State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Wuhan ; National Natural Science Foundation of China ; Strategic Priority Research Program of Chinese Academy of Sciences
内容类型	期刊论文
源URL	[http://ir.nigpas.ac.cn/handle/332004/43538]
专题	中国科学院南京地质古生物研究所
通讯作者	Zhang, Xiao-Le
作者单位	1.Peking Univ, Sch Earth & Space Sci, Beijing 100871, Peoples R China 2.China Univ Geosci, State Key Lab Biogeol & Environm Geol, Wuhan 430074, Peoples R China 3.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol & Stratig, Nanjing 210008, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Xiao-Le,Wang, Yi,Liu, Jian-Bo,et al. Guangyuanichnus majianus n. igen. n. isp., a large, complex burrow system from the Lower Devonian Pingyipu Formation of the northwestern Yangtze platform, South China[J]. PALAEOWORLD,2024,33(1):74-91.
APA	Zhang, Xiao-Le,Wang, Yi,Liu, Jian-Bo,&Xu, Hong-He.(2024).Guangyuanichnus majianus n. igen. n. isp., a large, complex burrow system from the Lower Devonian Pingyipu Formation of the northwestern Yangtze platform, South China.PALAEOWORLD,33(1),74-91.
MLA	Zhang, Xiao-Le,et al."Guangyuanichnus majianus n. igen. n. isp., a large, complex burrow system from the Lower Devonian Pingyipu Formation of the northwestern Yangtze platform, South China".PALAEOWORLD 33.1(2024):74-91.