FIG. 21 in The anatomy and phylogenetic affinities of Cynthiacetus peruvianus, a large Dorudon-like basilosaurid (Cetacea, Mammalia) from the late Eocene of Peru

FIG. 21. — Ventral view of the right periotic of MNHN.F.PRU10, holotype of Cynthiacetus peruvianus. Abbreviations: aes, ventral edge of the anteroexternal sulcus; apd, anterior pedicle for the tympanic; app, anterior process of the periotic; fc, cochlear window; fo, foramen pseudovale; fpb, falcate process of the basioccipital; fps, falciform process of the squamosal; fs, facial sulcus; fv, vestibular window; gtt, groove for the tensor tempani; inc, incudal fossa; jn, jugular notch; Ma, malleus; mce, medial crest of the exoccipital; men, groove for the meningeal arteries; mf, mallear fossa; nc, nuchal crest; plc, posterolateral crest; ppd, posterior inner pedicle of the tympanic; ppe, paroccipital process of the exoccipital; ppp, posterior process of the periotic; ppt, posterior process of the tympanic bulla; pr, promontorium; V3, path of the mandibular nerve; VII, foramen for the facia nerve; vlt, ventrolateral tuberosity. Dark grey-shaded regions and hatched regions represent the sediment and broken portions of bone, respectively. Not to scale.