Figure 2 in Cranial osteology of Exostinus serratus (Squamata: Anguimorpha), fossil sister taxon to the enigmatic clade Xenosaurus

Figure 2. Premaxilla of Exostinus serratus, USNM v16565. A, anterior view. B, posterior view. Abbreviations: PMaf, alveolar foramen; PMar, ascending ridge; PMaw, apical wedge; PMcp, connecting portion; PMds, dentigerous strip; PMip, incisive process; PMlmxf, lateral maxillary facet; PMmk, median keel; PMmmxf, medial maxillary facet; PMnaf, nasal facet; PMnp, nasal process; PMpf, posterior foramen; PMro, rostral osteoderm; PMsf, septal fossa; PMsw, supranarial wing; PMtvp, table atop vomerine process; PMvof, vomerine facet; PMvp, vomerine process.