NIGPAS OpenIR
A fourteen-faced hexangulaconulariid from the early Cambrian (Stage 2) Yanjiahe Formation, South China
Guo, Junfeng1; Han, Jian2; Van Iten, Heyo3,4; Wang, Xing2; Qiang, Yaqin1; Song, Zuchen1; Wang, Wenzhe1; Zhang, Zhifei2; Li, Guoxiang (李国祥)5
2020
Source PublicationJOURNAL OF PALEONTOLOGY
ISSN0022-3360
Volume94Issue:1Pages:45-55
Abstract

Extant medusozoans (phylum Cnidaria) are dominated by forms showing tetraradial symmetry, but stem-group medusozoans of early Cambrian age collectively exhibit tetra-, bi-, penta-, and hexaradial symmetry. Moreover, the developmental and evolutionary relationships between four-fold and other types of radial symmetry in medusozoans remain poorly understood. Here we describe a new hexangulaconulariid, Septuconularia yanjiaheensis new genus new species, from Bed 5 of the Yanjiahe Formation (Cambrian Stage 2) in the Three Gorges area of Hupei Province, China. The laterally compressed, biradially symmetrical periderm of this species possesses 14 gently tapered faces, the most of any hexangulaconulariid described thus far. The faces are bordered by longitudinal ridges and crossed by short, irregularly spaced transverse ribs. Longitudinally, the periderm consists of three regions that probably correspond, respectively, to an embryonic stage, a transient juvenile stage, and a long adult stage. Septuconularia yanjiaheensis may have been derived from six-faced Hexaconularia (Fortunian Stage), which is morphologically intermediate between Septuconularia yanjiaheensis and Arthrochites. Furthermore, conulariids sensu stricto, carinachitids, and hexangulaconulariids may constitute a monophyletic group united by possession of an organic or organophosphatic periderm exhibiting longitudinal (corner) sulci, a facial midline, and offset of transverse ribs along the facial midline. UUID: http://zoobank.org/01a972aa-aef3-4eef-a9a5-c2d8c3dda615

DOI10.1017/jpa.2019.56
Language英语
WOS KeywordSMALL SHELLY FOSSILS ; YANGTZE GORGES AREA ; NORTHERN SICHUAN ; MICROFOSSILS ; HUBEI ; MICROANATOMY ; AFFINITIES ; MEDUSOZOAN ; SCYPHOZOA ; CNIDARIA
Funding ProjectStrategic Priority Research Program of the Chinese Academy of Sciences[XDB26000000] ; Natural Science Foundation of China[41472015] ; Natural Science Foundation of China[41672009] ; Natural Science Foundation of China[41621003] ; Natural Science Foundation of China[41772010] ; Natural Science Foundation of China[41890844] ; Natural Science Foundation of China[41890840] ; Natural Science Foundation of China[41720104002] ; Ministry of Science[D17013] ; Overseas Expertise Introduction Centre for Discipline Innovation Project (111) of the Ministry of Education of China[D17013]
WOS Research AreaPaleontology
WOS SubjectPaleontology
WOS IDWOS:000503820500005
Funding OrganizationStrategic Priority Research Program of the Chinese Academy of Sciences ; Natural Science Foundation of China ; Ministry of Science ; Overseas Expertise Introduction Centre for Discipline Innovation Project (111) of the Ministry of Education of China
PublisherCAMBRIDGE UNIV PRESS
Document Type期刊论文
Identifierhttp://ir.nigpas.ac.cn/handle/332004/29569
Collection中国科学院南京地质古生物研究所
Corresponding AuthorHan, Jian
Affiliation1.Changan Univ, Sch Earth Sci & Land Resources, Key Lab Western Chinas Mineral Resources & Geol E, Minist Educ, Xian 710054, Shaanxi, Peoples R China
2.Northwest Univ, Dept Geol, Shaanxi Key Lab Early Life & Environm, State Key Lab Continental Dynam, 229 Taibai Rd, Xian 710069, Shaanxi, Peoples R China
3.Hanover Coll, Dept Geol, Hanover, IN 47243 USA
4.Cincinnati Museum Ctr, Dept Invertebrate Paleontol, 1301 Western Ave, Cincinnati, OH 45203 USA
5.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol & Stratig, Nanjing 210008, Jiangsu, Peoples R China
Recommended Citation
GB/T 7714
Guo, Junfeng,Han, Jian,Van Iten, Heyo,et al. A fourteen-faced hexangulaconulariid from the early Cambrian (Stage 2) Yanjiahe Formation, South China[J]. JOURNAL OF PALEONTOLOGY,2020,94(1):45-55.
APA Guo, Junfeng.,Han, Jian.,Van Iten, Heyo.,Wang, Xing.,Qiang, Yaqin.,...&Li, Guoxiang .(2020).A fourteen-faced hexangulaconulariid from the early Cambrian (Stage 2) Yanjiahe Formation, South China.JOURNAL OF PALEONTOLOGY,94(1),45-55.
MLA Guo, Junfeng,et al."A fourteen-faced hexangulaconulariid from the early Cambrian (Stage 2) Yanjiahe Formation, South China".JOURNAL OF PALEONTOLOGY 94.1(2020):45-55.
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