Figure 7. Odobenocetops leptodon, referred specimen (MNHN SAO 202). Periotic in dorsal (A), lateral (B), ventral (C), and medial (D) views. Abbreviations: ac, aqueductus cochleae; ap, anterior process; av, aqueductus vestibuli; dfc, dorsal opening of the facial canal; ef, fovea epitubaria; fc, fenestra cochleae; fi, fossa incudis; fm, fossa mallei (= epitympanic recess); iam, internal auditory meatus; pbf, posterior bullar facet; pc, pars cochlearis (= promontorium); pp, posterior process; slf, sulcus facialis; so, supernumerary ossicles; st, stapes; stf, fossa for stapedial muscle; ts, tractus spiralis; vfc, ventral opening of the facial canal; vr, ventral rim of the anterior process.

Published as part of Muizon, Christian de & Domning, Daryl P., 2002, The anatomy of Odobenocetops (Delphinoidea, Mammalia), the walrus-like dolphin from the Pliocene of Peru and its palaeobiological implications, pp. 423-452 in Zoological Journal of the Linnean Society 134 (4) on page 434, DOI: 10.1046/j.1096-3642.2002.00015.x, http://zenodo.org/record/10114644