Figure 3. Cranium of Pappaceras meiomenus.

Photographs in dorsal (a) lateral (c) and ventral (e) views, and corresponding interpretive drawings (b), (d,e) respectively. Abbreviation: bo, basioccipital; bs, basisphenoid; cac, caudal opening of alar canal; ef, ethmoid foramina; (f) frontal; hf, hypoglossal foramen; if, incisive foramen;; i of, infraorbital foramen; l, lacrimal; m, maxilla; ml, malar; n, nasal; o, occipital; oc, occipital condyle; of, optic foramen; obf, orbital foramen; ovf, oval foramen; p, parietal; pap, paroccipital process; pl, palatine; pc, postorbital crest; pgp, postglenoid process; pm, premaxilla; pof, preorbital foramen; ppf, posttympanic-paroccipital foramen; pp, postorbital process; ppp, pterygoid process of palatine; ptp, posttympanic process; s, squamosal; sc, sagittal crest; z, zygomatic; zp, zygomatic process of squamosal; C, upper canine; I1-3, the first to third upper incisor; P2-4, the second to fourth upper premolar; M1-3, the first to third upper molar.