FIG. 11. Thylacosmilus atrox MMP 1443-M. A in Caudal Cranium Of Thylacosmilus Atrox (Mammalia, Metatheria, Sparassodonta), A South American Predaceous Sabertooth

FIG. 11. Thylacosmilus atrox MMP 1443-M. A, detail of the basicranium, with B, key. Abbreviations: AL, alisphenoid; bjs, basijugular sulcus; BO, basioccipital; BS, basisphenoid; cc, carotid canal; cod, occipital condyle; ctpsq, caudal tympanic process of squamosal; eam, external acoustic meatus; EX, exoccipital; fmg, foramen magnum; fo, foramen ovale;?fsp, foramen spinosum; gf, glenoid fossa; ips, inferior petrosal sinus; pgf, postglenoid foramen; ptp, posttympanic process of the squamosal; sjf, secondary jugular foramen; smf, stylomastoid foramen; SQ, squamosal; st, sphenoidal tubercle; tpex, tympanic process of exoccipital. Arrow indicates direction to or position of features hidden by other structures and shading indicates damage or reconstruction.