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Exceptionally preserved hyolithids from the middle Cambrian of North China
Sun, Haijing(孙海静)1,2,3; Sun, Zhixin(孙志新)3,4; Zhao, Fangchen(赵方臣)3,4
2021-11-01
Source PublicationGEOLOGICAL MAGAZINE
ISSN0016-7568
Volume158Issue:11Pages:1951-1959
Abstract

Hyoliths are extinct enigmatic organisms of early lophotrochozoan affinity known globally from the Palaeozoic Era and were especially diverse and abundant in the Cambrian Period. However, the commonly incomplete preservation of hyolith exoskeletons and our limited knowledge of their soft anatomy makes their ecological and biological aspects unclear. Konservat-Lagerstatte are crucial windows to unlock the mysteries of hyoliths. Here we report a new occurrence of exceptionally preserved hyolithid hyoliths from the middle Cambrian Mantou Formation (Miaolingian, Wuliuan) in Shandong Province, North China. The preserved soft organs of the new species Novakotheca weifangensis sp. nov. include a U-shaped gut and possible pharynx, oesophagus, stomach and digestive gland, which provide significant new information for the reconstruction of the digestive system of hyolithids. Two taphonomic modes of hyoliths described herein are recognized: soft tissue preservation through pyritization and three-dimensional shell preservation through phosphatization. Morphological variations due to different preservational pathways in the same species are revealed, highlighting the taphonomic bias on taxonomy. The ecological association between hyoliths and small brachiopod epibionts is a direct example of species interactions, providing insights into the ecological structures and adaptability of early animals during Cambrian time.

KeywordHyolitha soft anatomy taphonomy epibiont association Burgess Shale-type Lagerstatte
DOI10.1017/S0016756821000510
Indexed BySCI
Language英语
WOS KeywordKONSERVAT-LAGERSTATTE ; ORDOVICIAN ; SHALE ; PYRITIZATION ; TAPHONOMY ; MORPHOLOGY ; TAXONOMY ; MOLLUSCA ; FOSSILS ; FAUNAS
Funding ProjectStrategic Priority Research Programme (B) of the Chinese Academy of Sciences[XDB26000000] ; National Natural Science Foundation of China[41602002] ; State Key Laboratory of Palaeobiology and Stratigraphy (SKLPS, NIGPAS)[193125] ; China Postdoctoral Science Foundation[2020M682935]
WOS Research AreaGeology
WOS SubjectGeosciences, Multidisciplinary
WOS IDWOS:000727656200005
Funding OrganizationStrategic Priority Research Programme (B) of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; State Key Laboratory of Palaeobiology and Stratigraphy (SKLPS, NIGPAS) ; China Postdoctoral Science Foundation
PublisherCAMBRIDGE UNIV PRESS
Document Type期刊论文
Identifierhttp://ir.nigpas.ac.cn/handle/332004/40232
Collection中国科学院南京地质古生物研究所
Corresponding AuthorSun, Haijing(孙海静)
Affiliation1.Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Isotope Geochem, Guangzhou 510640, Peoples R China
2.CAS Ctr Excellence Deep Earth Sci, Guangzhou 510640, Peoples R China
3.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol & Stratig, Ctr Excellence Life & Palaeoenvironm, Nanjing 210008, Peoples R China
4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
First Author AffilicationNanjing Institute of Geology and Palaeonotology,CAS
Corresponding Author AffilicationNanjing Institute of Geology and Palaeonotology,CAS
Recommended Citation
GB/T 7714
Sun, Haijing,Sun, Zhixin,Zhao, Fangchen. Exceptionally preserved hyolithids from the middle Cambrian of North China[J]. GEOLOGICAL MAGAZINE,2021,158(11):1951-1959.
APA Sun, Haijing,Sun, Zhixin,&Zhao, Fangchen.(2021).Exceptionally preserved hyolithids from the middle Cambrian of North China.GEOLOGICAL MAGAZINE,158(11),1951-1959.
MLA Sun, Haijing,et al."Exceptionally preserved hyolithids from the middle Cambrian of North China".GEOLOGICAL MAGAZINE 158.11(2021):1951-1959.
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