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A New Helmetiid Arthropod from the Early Cambrian Chengjiang Lagerstätte, Southwest China

Published online by Cambridge University Press:  15 October 2015

Fangchen Zhao ,
Shixue Hu ,
Han Zeng  and
Maoyan Zhu
Fangchen Zhao
Affiliation:
State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, 39 East Beijing Road, Nanjing 210008, China, ,
Shixue Hu
Affiliation:
Chengdu Institute of Geology and Mineral Resources, Chengdu Center of China Geological Survey, Chengdu 610081, China,
Han Zeng
Affiliation:
State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, 39 East Beijing Road, Nanjing 210008, China, ,
Maoyan Zhu
Affiliation:
State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, 39 East Beijing Road, Nanjing 210008, China, ,
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Abstract

A new arthropod, Haifengella corona new genus new species is described from the early Cambrian Chengjiang Lagerstätte (Series 2, Stage 3), Yunnan Province, southwest China. It is readily assignable to helmetiida based on gross morphology of the tergum. The new helmetiid is unique in having the marginal spines extending over one-third of the total body width. The weakly sclerotized tergum consists of six thoracic tergites with edge-to-edge tergite articulations. The sub-trapezoidal cephalic shield has a pair of long spines projecting from each posterolateral corner. A prehypostomal sclerite (anterior sclerite) recesses in the anterior margin of the cephalic shield, and a pair of bulges that are close to the prehypostomal sclerite in the cephalic shield are presumed to be the position of ventral eyes. Each of the thoracic tergites exhibits a pair of long spines projecting from the posterolateral corners. The semicircular pygidium carries one terminal spine and two pairs of lateral spines.

Type
Research Article
Information
Journal of Paleontology , Volume 88 , Issue 2 , March 2014 , pp. 367 - 370
Copyright
Copyright © The Paleontological Society 

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References

Briggs, D. E. G., Erwin, D. H., and Collier, F. J. 1994. The fossils of the Burgess Shale. Smithsonian Institution Press, Washington, D.C. Google Scholar
Chen, J., Zhou, G., Zhu, M., and Yeh, K. 1996. The Chengjiang Biota—A Unique Window of the Cambrian Explosion. The National Museum of Natural Science, Taichung. (In Chinese) Google Scholar
Conway Morris, S., Whittington, H. B., Briggs, D. E. G., Hughes, C. P., and Bruton, D. L. 1982. Atlas of the Burgess Shale. Palaeontological Association, London.Google Scholar
Cotton, T. J. and Braddy, S. J. 2004. The phylogeny of arachnomorph arthropods and the origin of the Chelicerata. Transactions of the Royal Society of Edinburgh-Earth Sciences, 94:169–193.Google Scholar
Edgecombe, G. D. and Ramsköld, L. 1999. Relationships of Cambrian Arachnata and the systematic position of Trilobita. Journal of Paleontology, 73:263–287.Google Scholar
Hendricks, J. R. and Lieberman, B. S. 2008. New phylogenetic insights into the Cambrian radiation of arachnomorph arthropods. Journal of Paleontology, 82:585–594.Google Scholar
Hou, X. 1987. Three new large arthropods from lower Cambrian, Chengjiang, eastern Yunnan. Acta Palaeontologica Sinica, 26:272–285. (In Chinese) Google Scholar
Hou, X. and Bergström, J. 1997. Arthropods of the lower Cambrian Chengjiang fauna Southwest China. Fossils and Strata, 45:1–116.Google Scholar
Hou, X., Ramsköld, L., and Bergström, J. 1991. Composition and preservation of the Chengjiang fauna—a lower Cambrian soft-bodied biota. Zoologica Scripta, 20:395–411.Google Scholar
Novozhilov, N. I. 1960. Klass Merostomoidea Størmer, 1944, Chlenistonogie, Trilobitoobraznye i Rakoobraznye [Arthropoda, Trilobitomorpha and Crustacea]. Osnovy Paleontologii, p. 195–197.Google Scholar
Ortega-Hernańdez, J., Legg, D. A., and Braddy, S. J. 2013. The phylogeny of aglaspidid arthropods and the internal relationships within Artiopoda. Cladistics, 29:15–45.CrossRefGoogle ScholarPubMed
Paterson, J. R., Edgecombe, G. D., García-Bellido, D. C., Jago, J. B., and Gehling, J. G. 2010. Nektaspid arthropods from the lower Cambrian Emu Bay Shale Lagerstätte South Australia, with a reassessment of lamellipedian relationships. Palaeontology, 53:377–402.CrossRefGoogle Scholar
Paterson, J. R., García-Bellido, D. C., and Edgecombe, G. D. 2012. New Artiopodan arthropods from the early Cambrian Emu Bay Shale Konservat-Lagerstätte of South Australia. Journal of Paleontology, 86:340–357.Google Scholar
Simonetta, A. M. and Delle Cave, L. 1975. The Cambrian non trilobite arthropods from the Burgess Shale of British Columbia: A study of their comparative morphology taxonomy and evolutionary significance. Palaeontographica Italica, 69:1–37.Google Scholar
Stein, M., Budd, E. G., Peel, J. S., and Harper, D. A. 2013. Arthroaspis n. gen., a common element of the Sirius Passet Lagerstätte (Cambrian, North Greenland), sheds light on trilobite ancestry. BMC Evolutionary Biology, 13:99.CrossRefGoogle Scholar
Størmer, L. 1959. Trilobitomorpha, Trilobitoldea, p. 22–37. In Moore, R. C. (ed.), Treatise on Invertebrate Paleontology, Part O, Arthropoda 1. Geological Society of America, Boulder and University of Kansas Press, Lawrence, Kansas.Google Scholar
von Siebold, C. T. E. and Stannius, F. H. 1845. Lehrbuch der vergleichenden Anatomie der wirbellosen Thiere. Veit, Berlin.Google Scholar
Walcott, C. D. 1918. Geological explorations in the Canadian Rockies. Explorations and fieldwork of the Smithsonian Institution in 1917. Smithsonian Miscellaneous Collections, 68:4–20.Google Scholar
Whittington, H. B. 1997. Morphology of the exoskeleton, p. 1–85. In Kaesler, R. L. (ed.), Treatise on Invertebrate Paleontology, Part O. Arthropoda 1, Trilobita, revised volume 1: Introduction, Order Agnostida, Order Redlichiida. Geological Society of America, Boulder, Colorado, and University of Kansas Press, Lawrence, Kansas.Google Scholar
Zhang, X. and Shu, D. 2005. A new arthropod from the Chengjiang Lagerstätte, early Cambrian, southern China. Alcheringa, 29:185–194.CrossRefGoogle Scholar
Zhao, F., Caron, J.-B., Hu, S., and Zhu, M. 2009. Quantitative analysis of taphofacies and paleocommunities in the early Cambrian Chengjiang Lagerstätte. Palaios, 24:826–839.Google Scholar
Zhu, M., Li, G., Zhang, J., Steiner, M., Qian, Y., and Jiang, Z. 2001. Early Cambrian Stratigraphy of East Yunnan, Southwestern China: A Synthesis. In Zhu, M., Van Iten, H., Peng, S., and Li, G. (eds.), The Cambrian of South China. Acta Palaeontologica Sinica, 40:4–39.Google Scholar