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(Left) Fragment of right quadratojugal (qj), green, in quadratojugal notch. (Right) Cross section through back of skull illustrating the quadratojugal inserted into quadratojugal notch in the squamosal flange. Abbreviations: qj, quadratojugal; qjn, quadratojugal notch; sq, squamosal; sqs, squamosal septum.
