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Keywords from Image Description:
The Quarterly journal of the Geological Society of London . TULLE NEWTON ON THE REMAINS OF Hypothetical restoration of the skull of Portheus gaultinus see PI XXII figs sp of bs Upper portion of basi sphenoid as Alisphenoid pa Parietal region ps Presphenoid fr Frontal sp ot Sphenotic postfrontal pr ot Prootic op ot Opisthotic