Stratigraphic chart of the lower Permian (partial)
Content updated October 16, 2005
Phylogenetic relationships of early synapsids with particular attention to varanopids (from Reisz and Laurin 2004 )
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Stratigraphic chart of the lower Permian (partial) Content updated October 16, 2005
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Phylogenetic relationships of early synapsids with particular attention to varanopids (from Reisz and Laurin 2004 )
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