Extended Data Fig. 1: Additional cranial anatomy of Cratonavis zhui, IVPP V31106.
From: Decoupling the skull and skeleton in a Cretaceous bird with unique appendicular morphologies
a, Photograph. b, c, CT Isosurface of the whole skull in dorsal (a) and (b) ventral views. ba, basisphenoid-parasphenoid; bp, basipterygoid process; car, caudal ramus of lacrimal; de, dentary; ecp, ectopterygoid; fp, frontal process of premaxilla; fr, frontal; jmx, jugal process of maxilla; ju, jugal; jup, jugal process of postorbital; lc, lacrimal; mx, maxilla; na, nasal; pa, palatine; pi, parietal; pm, premaxilla; pmd, post-dentary mandible; po, postorbital; poq, postorbital process of jugal; pr, parasphenoid rostrum; pt, pterygoid; qju, quadratojugal process of jugal; qu, quadrate; quj, quadratojugal; rea, retroarticular process; sqq, squamosal process of quadratojugal; sr, subcellar recess; vo, vomer; l/r, left/right side. The arrowhead (a) denotes the lateral flange of the lacrimal. Scale bars, 10 mm (a–c).
