Figure 3 in Cranial osteology of Exostinus serratus (Squamata: Anguimorpha), fossil sister taxon to the enigmatic clade Xenosaurus

Figure 3. Premaxilla of Exostinus serratus, USNM v16565. A, left lateral view (anterior to the left). B, dorsal view (anterior to the left). C, ventral view (anterior to the left). Abbreviations: PMar, ascending ridge; PMds, dentigerous strip; PMdg, dental gutter; PMfip, footplate of incisive process; PMfvs, flattened portion of ventral surface; PMlmxf, lateral maxillary facet; PMmk, median keel; PMro, rostral osteoderm; PMtvp, table atop vomerine process; PMvp, vomerine process.