Gallery/sphenacodont
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Dimetrodon borealis walks along a dry riverbed, north-central Pangaea, 270 mya
Dimetrodon borealis walks along a dry riverbed, north-central Pangaea, 270 mya
Dimetrodon borealis walks along a dry riverbed, north-central Pangaea, 270 mya
Dimetrodon borealis walks along a dry riverbed, north-central Pangaea, 270 mya
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