Sclerites and possible mouthparts of Wiwaxia from the temperate palaeolatitudes of Colombia, South America
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Peer-reviewed
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Abstract
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.
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This is the author accepted manuscript. The final version is available from Wiley via http://dx.doi.org/10.1111/let.12154
Keywords
31 Biological Sciences, 3103 Ecology, 3104 Evolutionary Biology, 37 Earth Sciences, 3705 Geology
Journal Title
Lethaia
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0024-1164
1502-3931
1502-3931
Volume Title
49
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Scandinavian University Press / Universitetsforlaget AS
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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.