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Journal of Paleontology


from the Second International Symposium on the Cambrian System: US Geological Survey, Open-File Report 81-743, p. 19–21.


Bengtson, S., Conway Morris, S., Cooper, B.J., Jell, P.A., and Runnegar, B.N., 1990, Early Cambrian fossils from South Australia: Memoirs of the Asso- ciation of Australasian Palaeontologists, v. 9, 368 p.


Bornemann, J.G., 1886, Die Versteinerungen des cambrischen Schichtensys- tems der Insel Sardinien, nebst vergleichenden Untersuchungen ü ber ana- loge Vorkommnisse aus andern Ländern: Erste Abstheilung: Nova Acta der Kaiserlichen Leopoldinisch-Carolinischen Deutschen Akademie der Nat- urforscher, v. 51, p. 1–148.


Chen, J.Y., and Zhou, G.Q., 1997, Biology of the Chengjiang fauna, in Chen, J. Y., Cheng, Y., and Van Iten, H., eds., The Cambrian Explosion and the Fossil Record: Bulletin of the National Museum of Natural Science, v. 10, p. 11–105.


Chen, J.Y., Zhou, G.Q., Zhu, M.Y., and Yeh., K., 1996, The Chengjiang Biota— A unique window of the Cambrian Explosion: Taicung, Taiwan National Museum of Natural Science, 222 p. [in Chinese].


Conway Morris, S., and Caron, J.B., 2007, Halwaxiids and the early evolution of the lophotrochozoans: Science, v. 315, p. 1255–1258.


Conway Morris, S., and Peel, J.S., 1995, Articulated halkieriids from the Lower Cambrian of North Greenland and their role in early protostome evolution: Philosophical Transactions of the Royal Society of London, v. 347, p. 305– 358.


Doré, F., and Reid, R.E., 1965, Allonnia tripodophora nov. gen., nov. sp., nouvelle Éponge du Cambrien inférieur de Carteret (Manche): Compte Rendu Sommaire des Séances de la Société Géologique de France, p. 20– 21.


Figure 14. Nidelric gaoloufangensis n. sp. specimens on the same slab. White arrow points to the holotype, YN-GLF-PAL-17. Scale bar=10mm.


Conclusions


New well-preserved specimens not only provide new members of the chancelloriids, but also help disclose the original appearance of this enigmatic group. Chancelloriids, especially Allonnia from early and middle Cambrian, may have had the ability to partially or completely expand and compact the body, which might have played an important role in feeding. Based on new specimens, Nidelric shows many similarities with chan- celloriids in the morphology of body and spines, which suggests that it is an unusual form of chancelloriid, but still this needs to be confirmed by more solid evidence.


Acknowledgments


This research is supported by the Strategic Project of Science and Technology of Chinese Academy of Sciences (XDB03010403) and the State Scholarship Fund of China (41272030, 40972026). We appreciate the constructive com- ments from reviewers and the editor, which helped improve the manuscript significantly. We thank L. Fei and J. Lei for their assistance during field work.


References


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