Sclerites and possible mouthparts of Wiwaxia from the temperate palaeolatitudes of Colombia, South America
2016
Smith, Martin R | Hughes, Gareth MG | Vargas, María C | de La Parra, Felipe
This is the author accepted manuscript. The final version is available from Wiley via http://dx.doi.org/10.1111/let.12154
显示更多 [+] 显示较少 [-]The problematic mollusc Wiwaxia is perhaps the most widely distributed non‐mineralized Cambrian metazoan, but has only been reported from palaeotropical latitudes. Here, we describe mid‐Cambrian (Drumian, c. 504 Ma) sclerites and possible tooth arrays from the northern Llanos Basin, Colombia, recovered from drilled ditch cuttings by palynological processing – demonstrating that pristine material and low‐manipulation processing are not essential to the recovery of Small Carbonaceous Fossils. This, the first report of Wiwaxia from South America, substantially expands Wiwaxia's geographic range into the high palaeolatitudes.
显示更多 [+] 显示较少 [-]We thank the two referees for their constructive comments, and Ecopetrol SA for permission to publish the wellbore material. Jean Bernard Caron, Peter Fenton, Doug Erwin and Mark Florence provided access to Burgess Shale material, which was funded in part by a Geological Society of America research grant to M.R.S. M.R.S. is supported by Clare College, Cambridge.
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