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A problematic animal fossil from the early Cambrian Hetang Formation, South China
Tang, Qing (唐卿)1; Hu, Jie2; Xie, Guwei3,4,5; Yuan, Xunlai (袁训来)6,7; Wan, Bin (万斌)6; Zhou, Chuanming (周传明)8; Dong, Xu9; Cao, Guohua9; Lieberman, Bruce S.10; Leys, Sally P.11; Xiao, Shuhai1
2019-11-01
Source PublicationJOURNAL OF PALEONTOLOGY
ISSN0022-3360
Volume93Issue:6Pages:1047-1057
Abstract

The lower-middle Hetang Formation (Cambrian Stage 2-3) deposited in slope-basinal facies in South China is well known for its preservation of the earliest articulated sponge fossils, providing an important taphonomic window into the Cambrian Explosion. However, the Hetang Formation also hosts a number of problematic animal fossils that have not been systematically described. This omission results in an incomplete picture of the Hetang biota and limits its contribution to the understanding of the early evolution of animals. Here we describe a new animal taxon, Cambrowania ovata Tang and Xiao, new genus new species, from the middle Hetang Formation in the Lantian area of southern Anhui Province, South China. Specimens are preserved as carbonaceous compressions, although some are secondarily mineralized. A comprehensive analysis using reflected light microscopy, scanning electron microscopy, energy-dispersive X-ray spectroscopy, and micro-CT reveals that the new species is characterized by a spheroidal to fusoidal truss-like structure consisting of rafter-like crossbars, some of which are secondarily baritized and may have been internally hollow. Some specimens have aperture-like structures that are broadly similar to oscula of sponges, whereas others showevidence of amedial split reminiscent of gaping carapaces. While the phylogenetic affinity of Cambrowania ovata Tang and Xiao, n. gen. n. sp. remains problematic, we propose that it may represent carapaces of bivalved arthropods or more likely sponges in early life stages. Along with other problematic metazoan fossils such as hyolithids and sphenothallids, Cambrowania ovata Tang and Xiao, n. gen. n. sp. adds to the diversity of the sponge-dominated Hetang biota in an early Cambrian deepwater slope-basinal environment.

DOI10.1017/jpa.2019.26
Indexed BySCI
Language英语
WOS KeywordBIOSTRATIGRAPHIC CORRELATION ; SPONGES ; EVOLUTION ; ASSEMBLAGES ; TRANSITION ; ARTHROPOD ; ZHEJIANG ; NORTH ; ANHUI ; BIOTA
Funding ProjectNational Science Foundation[EAR 1528553] ; NASA Exobiology and Evolutionary Biology[80NSSC18K1086] ; National Natural Science Foundation of China[41502010] ; Geological Society of American ; Natural Sciences and Engineering Research Council of Canada ; Paleontological Society ; Society for Sedimentary Geology
WOS Research AreaPaleontology
WOS SubjectPaleontology
WOS IDWOS:000511137400001
Funding OrganizationNational Science Foundation ; NASA Exobiology and Evolutionary Biology ; National Natural Science Foundation of China ; Geological Society of American ; Natural Sciences and Engineering Research Council of Canada ; Paleontological Society ; Society for Sedimentary Geology
PublisherCAMBRIDGE UNIV PRESS
Citation statistics
Document Type期刊论文
Identifierhttp://ir.nigpas.ac.cn/handle/332004/31413
Collection中国科学院南京地质古生物研究所
Corresponding AuthorTang, Qing (唐卿)
Affiliation1.Virginia Tech, Dept Geosci, Blacksburg, VA 24061 USA
2.CNPC Int Chad Co Ltd, Ndjamena, Chad
3.PetroChina Co Ltd, Changqing Oilfield Branch, Lnstitute Explorat Dev & Res, Xian 710018, Peoples R China
4.Natl Engn Lab Explorat & Dev Low Permeabil Oil &, Xian 710018, Peoples R China
5.Northwest Univ, Dept Geol, Xian 710069, Peoples R China
6.Chinese Acad Sci, Ctr Excellence Life & Paleoenvironm, Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol & Stratig, Nanjing 210008, Peoples R China
7.Univ Chinese Acad Sci, Beijing 100039, Peoples R China
8.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, CAS Key Lab Econ Stratig & Palaeogeog, Nanjing 210008, Peoples R China
9.Wake Forest Univ, Virginia Tech, Sch Biomed Engn & Sci, Blacksburg, VA 24061 USA
10.Univ Kansas, Dept Ecol & Evolutionary Biol, Lawrence, KS 66045 USA
11.Univ Alberta, Dept Biol Sci, Edmonton, AB T6G 2E9, Canada
Recommended Citation
GB/T 7714
Tang, Qing ,Hu, Jie,Xie, Guwei,et al. A problematic animal fossil from the early Cambrian Hetang Formation, South China[J]. JOURNAL OF PALEONTOLOGY,2019,93(6):1047-1057.
APA Tang, Qing .,Hu, Jie.,Xie, Guwei.,Yuan, Xunlai .,Wan, Bin .,...&Xiao, Shuhai.(2019).A problematic animal fossil from the early Cambrian Hetang Formation, South China.JOURNAL OF PALEONTOLOGY,93(6),1047-1057.
MLA Tang, Qing ,et al."A problematic animal fossil from the early Cambrian Hetang Formation, South China".JOURNAL OF PALEONTOLOGY 93.6(2019):1047-1057.
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