File:Petrolacosaurus BW.jpg

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Summary

Description	Petrolacosaurus kansensis, a primitive diapsida from the Late Carboniferous of Kansas, pencil drawing
Date	11 August 2007
Source	Own work
Author	Nobu Tamura ( http://spinops.blogspot.com)

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File usage

The following pages on Schools Wikipedia link to this image (list may be incomplete):

Carboniferous

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