Fig. 14.6 in Chapter 14: The Basicranial and Posterior Cranial Anatomy of the Families of the Toxodontia

Fig. 14.6. Scarrittia canquelensis (AMNH 29614). Isolated left petrosal; tympanic aspect. Rostral toward top of page; medial to left. Asterisk (*) marks squamosal articular surface. Abbreviations: cf, cochlear fossula; cpn, canal for greater petrosal nerve; etr, epitympanic recess; fs, facial sulcus; fv, fenestra vestibuli; mpb, medial petrosal border; p, promontorium; sff, secondary facial foramen; stf, stapedius fossa; tf, tensor tympani fossa; tt, tegmen tympani; vpt, ventral process of the petrosal.