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. 2014 Jun 10;14:128. doi: 10.1186/1471-2148-14-128

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Copyright © 2014 Butler et al.; licensee BioMed Central Ltd.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Simplified version of the strict consensus of 90 most parsimonious trees. Figure shows known stratigraphic ranges for major clades and stratigraphic uncertainty for gracilisuchid taxa, which are all known from point occurences.