Anatomy and lifestyles of Early Cambrian priapulid worms exemplified by Corynetis and Anningvermis from the Maotianshan Shale (SW China)
Huang, DY (黄迪颖); Vannier, J; Chen, JY (陈均远)
2004-03-01
发表期刊LETHAIA
ISSN0024-1164
卷号37期号:1页码:21-33
摘要

Accurate information on the anatomy and ecology of worms from the Cambrian Lagerstatten of SW China is sparse. The present study of two priapulid worms Anningvermis n. gen. and Corynetis Lou & Hu, 1999 from the Lower Cambrian Maotianshan Shale biota brings new information concerning the anatomical complexity, functional morphology and lifestyles of the Early Cambrian priapulids. Comparisons are made with Recent priapulids from Sweden (live observations, SEM). The cuspidate pharyngeal teeth of Anningvermis (circumoral pentagons) and the most peculiar radiating oral crown of Corynetis added to the very elongate pharynx of these two forms are interpreted as two different types of grasping apparatus possibly involved in the capture of small prey. Corynetis and Anningvermis are two representative examples of the Early Cambrian endobenthic communities largely dominated by priapulid worms (more than ten species in the Maotianshan Shale biota) and to a much lesser extent by brachiopods. Corynetis and Anningvermis were probably active mud-burrowers and predators of small meiobenthic animals. Likewise predator priapulid worms exploited the interface layer between the seawater and bottom sediment, where meiobenthic organisms were abundant and functioned as prey. This implies that complex prey-predator relationship between communities already existed in the Early Cambrian. This study also shows that the circumoral pentagonal teeth and caudal appendage were present in the early stages of the evolutionary history of the group and were important features of the priapulid body plan already in the Early Cambrian. Two new families, one new genus and new species are introduced and described in the appendix.

关键词Anningvermis China Corynetis Early Cambrian Endobenthic Maotianshan Shale Lagerstatte Priapulida Worms
DOI10.1080/00241160410005088
语种英语
关键词[WOS]Palaeoscolecid Worms ; Evolution ; Seticoronaria ; Arthropods ; Morphology ; Chordate ; Caudatus ; Fossils
WOS研究方向Paleontology
WOS类目Paleontology
WOS记录号WOS:000221262800002
出版者TAYLOR & FRANCIS AS
文献类型期刊论文
条目标识符http://ir.nigpas.ac.cn/handle/332004/989
专题中国科学院南京地质古生物研究所
其他
通讯作者Huang, DY (黄迪颖)
作者单位1.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, Nanjing 210008, Peoples R China
2.Univ Lyon 1, UFR Sci Terre, UMR PEPS, F-69622 Villeurbanne, France
推荐引用方式
GB/T 7714
Huang, DY ,Vannier, J,Chen, JY . Anatomy and lifestyles of Early Cambrian priapulid worms exemplified by Corynetis and Anningvermis from the Maotianshan Shale (SW China)[J]. LETHAIA,2004,37(1):21-33.
APA Huang, DY ,Vannier, J,&Chen, JY .(2004).Anatomy and lifestyles of Early Cambrian priapulid worms exemplified by Corynetis and Anningvermis from the Maotianshan Shale (SW China).LETHAIA,37(1),21-33.
MLA Huang, DY ,et al."Anatomy and lifestyles of Early Cambrian priapulid worms exemplified by Corynetis and Anningvermis from the Maotianshan Shale (SW China)".LETHAIA 37.1(2004):21-33.
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