Fig 5. Cranium and thorax of Antaecetus aithai, specimen FSAC Bouj-200.

The cranium is shown in red and the teeth (labeled I¹ through M²) are shown in brown. Vertebrae are shown in blue, the left ribs in orange, and the right ribs in yellow. Thoracics and ribs are numbered from T2 through T11 and R2 through R11 on the assumption that the skeleton had 13 thoracics and 13 pairs of ribs. Rib numbers correspond to those of matching vertebrae. Abbreviations: Bo, basioccipital; c, mandibular condyle; Exo, exoccipital; glf, glenoid fossa; Ju, jugal; Max, maxilla; Pal, palatine; Pmx, premaxilla; pps, petrosal and surrounding pterygoid sinus; Pty, pterygoid; sop, supraorbital process of frontal; Sq, squamosal; Tym, tympanic.