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A new tetraradial olivooid (Medusozoa) from the lower Cambrian (Stage 2) Yanjiahe Formation, South China
Guo, Junfeng1; Han, Jian2; Van Iten, Heyo3,4; Song, Zuchen1; Qiang, Yaqin1; Wang, Wenzhe1; Zhang, Zhifei2; Li, Guoxiang (李国祥)5,6; Sun, Yifei2; Sun, Jie2
2020-05-01
Source PublicationJOURNAL OF PALEONTOLOGY
ISSN0022-3360
Volume94Issue:3Pages:457-466
Abstract

Octapyrgites elongatus n. gen. n. sp., a relatively rare, tetraradial olivooid (Cnidaria, Medusozoa), is described from Bed 5 of the Yanjiahe Formation (Cambrian Stage 2) near Yichang, China. Although similar to Olivooides and Quadrapyrgites from the Fortunian Stage in consisting of a partially corrugated (longitudinal) periderm with a quadrate (transverse) apical portion and V-shaped apertural lobes, O. elongatus is substantially larger than other olivooids. The elongate apical region of O. elongatus is similar to four-sided Anaconularia anomala (Barrande, 1867), though with a flat tip that may have been an adaption for a sessile mode of life. As in other olivooids, embryonic development in O. elongatus may have been direct. Last, the paucity of olivooids and the absence of pentaradial cnidarians and carinachitids in Cambrian Stage 2 indicate a marked decline in the disparity of cnidarians near the Fortunian-Cambrian Age 2 boundary, when by contrast bilaterians underwent rapid diversification. UUID: http://zoobank.org/60acc2f9-44f8-4a97-9449-960ad76f8fff

DOI10.1017/jpa.2019.101
Indexed BySCI
Language英语
WOS KeywordSMALL SHELLY FOSSILS ; MICROANATOMY ; EVOLUTION ; PATTERNS ; CNIDARIA ; SHAANXI ; ANATOMY ; RECORD ; BIRTH
Funding ProjectStrategic Priority Research Program of the Chinese Academy of Sciences[XDB26000000] ; Natural Science Foundation of China[41890844] ; Natural Science Foundation of China[41890840] ; 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[41720104002] ; Ministry of Science ; Overseas Expertise Introduction Centre for Discipline Innovation Project (111) of the Ministry of Education of China[D17013]
WOS Research AreaPaleontology
WOS SubjectPaleontology
WOS IDWOS:000527812000004
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
Citation statistics
Document Type期刊论文
Identifierhttp://ir.nigpas.ac.cn/handle/332004/31813
Collection中国科学院南京地质古生物研究所
Corresponding AuthorHan, Jian; Van Iten, Heyo
Affiliation1.Changan Univ, Minist Educ, Sch Earth Sci & Resources, Key Lab Western Chinas Mineral Resources & Geol E, Xian 710054, Peoples R China
2.Northwest Univ, Dept Geol, State Key Lab Continental Dynam, Shaanxi Key Lab Early Life & Environm, 229 Taibai Rd, Xian 710069, 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, Peoples R China
6.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, Ctr Excellence Life & Paleoenvironm, Nanjing 210008, Peoples R China
Recommended Citation
GB/T 7714
Guo, Junfeng,Han, Jian,Van Iten, Heyo,et al. A new tetraradial olivooid (Medusozoa) from the lower Cambrian (Stage 2) Yanjiahe Formation, South China[J]. JOURNAL OF PALEONTOLOGY,2020,94(3):457-466.
APA Guo, Junfeng.,Han, Jian.,Van Iten, Heyo.,Song, Zuchen.,Qiang, Yaqin.,...&Sun, Jie.(2020).A new tetraradial olivooid (Medusozoa) from the lower Cambrian (Stage 2) Yanjiahe Formation, South China.JOURNAL OF PALEONTOLOGY,94(3),457-466.
MLA Guo, Junfeng,et al."A new tetraradial olivooid (Medusozoa) from the lower Cambrian (Stage 2) Yanjiahe Formation, South China".JOURNAL OF PALEONTOLOGY 94.3(2020):457-466.
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