Figure 7 in Cranial osteology of Exostinus serratus (Squamata: Anguimorpha), fossil sister taxon to the enigmatic clade Xenosaurus

Figure 7. Left prefrontal of Exostinus serratus, USNM v16565. A, dorsal view (anterior to the left). B, ventral view (anterior to the left). C, posterior view. Abbreviations: PFaf, antorbital flange; PFcc, canthal crest; PFds, dermal surface; PFfos, foramen in orbital surface; PFfp, frontal process; PFjuf, jugal facet; PFlaf, lacrimal facet; PFlf, lacrimal foramen; PFmf, maxillary flange; PFnaf, nasal facet; PFpr, paranasal recess; PFslp, sublacrimal process.