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A new Early Cambrian onychophoran-like animal, Paucipodia gen. nov., from the Chengjiang fauna, China

Published online by Cambridge University Press:  03 November 2011

Chen Jun-yuan ,
Zhou Gui-qing  and
Lars Ramsköld
Chen Jun-yuan
Affiliation:
Nanjing Institute of Geology and Palaeontology, Academia Sinica, Nanjing 210008, People's Republic of China
Zhou Gui-qing
Affiliation:
Nanjing Institute of Geology and Palaeontology, Academia Sinica, Nanjing 210008, People's Republic of China
Lars Ramsköld*
Affiliation:
Museum of Palaeontology, University of Uppsala, Norbyvagen 22, S-752 36 Uppsala, Sweden
*
*To whom correspondence should be addressed
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Abstract

An onychophoran-like fossil animal, Paucipodia inermis gen. et sp. nov., is described from the Lower Cambrian Chengjiang lagerstatte in Yunnan, China. The animal was soft-bodied, and possessed six pairs of unjointed legs, each having two claws distally. The body was finely annulated, lacked trunk plates, and apparently terminated posteriorly with the last leg pair, without preserved evidence of a posterior trunk extension. Paucipodia widens the morphological range hitherto known in Cambrian lobopodians, notably regarding leg number and presence or absence of plates. Its morphology also provides support for the recently suggested anteroposterior orientation of Hallucigenia and Microdictyon.

Keywords

CambrianlobopodianOnychophorasoft-bodiedChengjiang fauna
Type
Research Article
Information
Earth and Environmental Science Transactions of The Royal Society of Edinburgh , Volume 85 , Issue 4 , 1994 , pp. 275 - 282
Copyright
Copyright © Royal Society of Edinburgh 1994

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References

Bengtson, S. 1991. Oddballs from the Cambrian start to get even. NATURE 351, 184–5.Google Scholar
Bowring, S. A., Grotzinger, J. P., Isachsen, C. E., Knoll, A. H., Pelechaty, S. M. & Kolosov, P. 1993. Calibrating rates of early Cambrian evolution. SCIENCE 261, 1293–8.Google Scholar
Budd, G. 1993. A Cambrian gilled lobopod from Greenland. NATURE 364, 709–11.CrossRefGoogle Scholar
Jun-yuan, Chen & Erdtmann, B.-D. 1991. Lower Cambrian fossil et al. Lagerstätte from Chengjiang, Yunnan, China: Insights for reconstructing early metazoan life. In Simonetta, A. M. & Conway Morris, S. (eds), The early evolution of Metazoa and the significance of problematic taxa, 57–76. Cambridge: Cambridge University Press.Google Scholar
Jun-yuan, Chen, Xian-guang, Hou & Hao-zhi, Lu 1989. Early Cambrian netted scale-bearing worm-like sea animal. ACTA PALAEONTOL SINICA 28, 1–16. [In Chinese with English summary.]Google Scholar
Jun-yuan, Chen, Bergström, J., Lindström, M. & Xian-guang, Hou 1991. The Chengjiang fauna—oldest soft-bodied fauna on Earth. NATL GEOGR RES & EXPLOR 7(1), 8–19.Google Scholar
Jun-yuan, Chen, Ramsköld, L. & Guiqing, Zhou 1994. Evidence for monophyly and arthropod affinity of Cambrian giant predators. SCIENCE 264, 1304–08.Google Scholar
Jun-yuan, Chen, Edgecombe, G. D., Ramsköld, L. & Gui-qing, Zhou in press 1. Head segmentation in Early Cambrian Fuxianhuia: implications for anthropod evolution. SCIENCE (spring, 1995).Google Scholar
Jun-yuan, Chen, Gui-qing, Zhou & Ramsköld, L. in press 2. The exceptional Cambrian lobopodian Microdictyon sinicum and its broader significance. BULL NATL MUS NAT SCJ (Taichung, Taiwan).Google Scholar
Jun-yuan, Chen, Ramsköld, L., Gui-qing, Zhou & Mao-yan, Zhu in prep. Lower Cambrian Hallucigenia from the Chengjiang fauna, China.Google Scholar
Collins, D. 1986. Paradise revisited. ROTUNDA (Royal Ontario Museum) 19(1), 30–9.Google Scholar
Conway Morris, S. 1977. A new metazoan from the Burgess Shale of British Columbia. PALAEONTOL 20, 623–40.Google Scholar
Dzik, J. & Krumbiegel, G. 1989. The oldest 'onychophoran' Xenusion: a link connecting phyla. LETHAIA 22, 169–81.CrossRefGoogle Scholar
Yichun, Hao & Degan, Shu 1987. The oldest known well-preserved Phaeodaria (Radiolaria) from southern Shaanxi. GEOSCIENCE 1, 301–10.Google Scholar
Xian-guang, Hou 1987. Two new arthropods from Lower Cambrian, Chengjiang, eastern Yunnan. ACTA PALAEONTOL SINICA 26, 236–56. [In Chinese with English summary.]Google Scholar
Xian-guang, Hou & Jun-yuan, Chen 1989. Early Cambrian arthropod- annelid intermediate animal, Luolishania gen. nov.. from Chengjiang, Yunnan. ACTA PALAEONTOL SINICA 28, 208–13. [In Chinese with English summary.]Google Scholar
Xian-guang, Hou, Ramsköld, L. & Bergstrom, J. 1991. Composition and preservation of the Chengjiang fauna—a Lower Cambrian soft-bodied biota. ZOOL SCRIPTA 20, 395–411.CrossRefGoogle Scholar
Mansuy, H. 1912. Etude geologique du Yunnan Oriental. MEM SERV GEOL INDO-CHINE 1 (2), 1–146.Google Scholar
Pompeckj, J. F. 1927. Ein neues Zeugnis uralten Lebens. PALAONTOL Z 9, 287–313.Google Scholar
L., Ramsköld. 1992a. The second leg row of Hallucigenia discovered. LETHAIA 25, 221–4.Google Scholar
Ramsköld, L. 1992b. Homologies in Cambrian Onychophora. LETHAIA 25, 443–60.CrossRefGoogle Scholar
Ramsköld, L. & Xianguang, Hou 1991. New Early Cambrian animal and onychophoran affinities of enigmatic metazoans. NATURE 351, 225–8.CrossRefGoogle Scholar
Robison, R. A. 1985. Affinities of Aysheaia (Onychophora), with description of a new Cambrian species. J PALEONTOL 59, 226–35.Google Scholar
Walcott, C. D. 1911. Cambrian Geology and Paleontology, II. 5. Middle Cambrian Annelids. SMITHSONIAN MISC COLLECT 57, 109–44, pis 18–23.Google Scholar
Whittington, H. B. 1978. The lobopod animal Aysheaia pedunculata Walcott, Middle Cambrian, Burgess Shale, British Columbia. PHIL TRANS R SOC LONDON B284, 165–97.Google Scholar
Wen-tang, Zhang & Xian-guang, Hou 1985. Preliminary notes on the occurrence of the unusual trilobite Naraoia in Asia. ACTA PALAEONTOL SINICA 24, 591–5. [In Chinese with English abstract.]Google Scholar