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Sclerites and possible mouthparts of Wiwaxia from the temperate palaeolatitudes of Colombia, South America

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Peer-reviewed

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Type

Article

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Authors

Hughes, GMG 
Vargas, MC 
de La Parra, F 

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.

Description

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

Conference Name

Journal ISSN

0024-1164
1502-3931

Volume Title

49

Publisher

Scandinavian University Press / Universitetsforlaget AS
Sponsorship
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.