FIG. 11 in Cranial Morphology And Phylogenetic Relationships Of Trigonostylops Wortmani, An Eocene South American Native Ungulate

FIG. 11. Trigonostylops wortmani AMNH VP-28700, parasagittal segments through left side of caudal cranium, sequence lateral to medial. In A, note preparation artifacts (gaps in matrix) in tympanic cavity and aditus of extratympanic sinus (asterisks); in B, distinct crista tympanica, track of retroarticular vein departing temporal sinus, and area of petrosal-squamosal fusion (arrows); in C, hypoglossal canal in rear wall of basicapsular fenestra, notch in ectotympanic for carotid artery, and cranial cavity exposed by preparation in endocranial wall of extratympanic sinus. Key: 1, aqueductus cochleae; 2, cavum supracochleare.