Figure 6 in Cranial osteology of Exostinus serratus (Squamata: Anguimorpha), fossil sister taxon to the enigmatic clade Xenosaurus

Figure 6. Left prefrontal of Exostinus serratus, USNM v16565. A, lateral view (anterior to the left). B, medial view (anterior to the right). C, anterior view. Abbreviations: PFaf, antorbital flange; PFafpr, anterior foramen near paranasal recess; PFcc, canthal crest; PFdpal, depression for palatine; PFds, dermal surface; PFfos, foramen in orbital surface; PFfp, frontal process; PFfrf, frontal facet; PFjuf, jugal facet; PFlaf, lacrimal facet; PFlf, lacrimal foramen; PFmf, maxillary flange; PFnaf, nasal facet; PFpfpr, posterior foramen near paranasal recess; PFpr, paranasal recess; PFrslp, ridge on sublacrimal process; PFslp, sublacrimal process.