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|Title:||A chancellorid-like metazoan from the early Cambrian Chengjiang Lagersttäte, China|
Siveter, Derek J.
Siveter, David J.
Harvey, Thomas H. P.
|Publisher:||Nature Publishing Group|
|Citation:||Hou, X. et al. A chancelloriid-like metazoan from the early Cambrian Chengjiang Lagersta¨tte, China. Sci. Rep. 4, 7340; DOI:10.1038/srep07340 (2014)|
|Abstract:||Nidelric pugio gen. et sp. nov. from the Cambrian Series 2 Heilinpu Formation, Chengjiang Lagerstatte, Yunnan Province, China, is an ovoid, sac-like metazoan that bears single-element spines on its surface. N. pugio shows no trace of a gut, coelom, anterior differentiation, appendages, or internal organs that would suggest a bilateral body plan. Instead, the sac-like morphology invites comparison with the radially symmetrical chancelloriids. However, the single-element spines of N. pugio are atypical of the complex multi-element spine rosettes borne by most chancelloriids and N. pugio may signal the ancestral chancelloriid state, in which the spines had not yet fused. Alternatively, N. pugio may represent a group of radial metazoans that are discrete from chancelloriids. Whatever its precise phylogenetic position, N. pugio expands the known disparity of Cambrian scleritome-bearing animals, and provides a new model for reconstructing scleritomes from isolated microfossils.|
|Rights:||Creative Commons Attribution NonCommercial ShareAlike 4.0 International License. http:// creativecommons.org/licenses/by-nc-sa/4.0/ Version of record: http://www.nature.com/srep/2014/141209/srep07340/full/srep07340.html|
|Appears in Collections:||Published Articles, Dept. of Geology|
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