Skull elements from Basturs Poble bonebed.

(A) Right maxilla (MCD-5099), lateral view. (B) Right jugal (MCD-5100), lateral view. (C) Left frontal (MCD-4869a) in dorsal (C1) and lateral (C2) views. (D) Right quadrate (MCD-5278), lateral view (rotated 90° clockwise with respect to its anatomical orientation). E) Right exoccipital (MCD-4851a), anterior view. Abbreviations: al, alveolus; cef, cerebral fossa; co, condyloid; cvf, caudoventral flange of jugal; dp, dorsal process of maxilla; ecs, ectopterygoid shelf; lc, lateral distal condyle of quadrate; mxc, maxillary canal; nprfs, articulation surface for prefrontal and nasal; oc, orbital constriction; or, orbit; palp, palatine process; pap, paroccipital process; pmxs, premaxillary shelf; popo, postorbital process; qh, quadrate head; qjf, quadratojugal flange; qjn, quadratojugal notch; rp, rostral process. Scale bar equals 5 cm.