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3D reconstruction of a skull of a dorsal view of Mirounga leonina with left auditory region, and detail of right auditory region, showing the tympanic bulla (pink) and the petrosal fused to the squamosal (yellow). CCAF, foramen of the canalis caroticus anterior; CCLE, lateral extension of the canalis caroticus; FS, fossa subarcuata; MAI, meatus acusticus internus; PM, promontorium; PT, petrosal; SQ, squamosal; T, tympanic.
