Extended Data Fig. 2: Palatal and lateral facial regions of the Cretaceous enantiornithine bird Falcatakely (UA 10015, holotype).
From: Late Cretaceous bird from Madagascar reveals unique development of beaks
a, Digital polygon surface reconstruction (from microcomputed tomography scans) of the palate and lateral face in ventral view. b, Reconstructed outline drawing of Falcatakely in palatal view (shaded regions are not preserved). c, Digital polygon surface reconstruction of internal aspect of left facial skeleton (premaxilla, maxilla and nasal) and palate in right lateral view. The left and right sides are indicated as (l) and (r), respectively. The dashed line in c represents the approximate contour of the caudal margin (that is, the ventral ramus of the lacrimal) of the antorbital fenestra. Scale bar, 5 mm; the scale bar is representative for a and c; the reconstruction in b is not to the same scale. AOF, antorbital fenestra; bs, basisphenoid rostrum; cp, choanal process of the (right) palatine; ect, ectopterygoid; EN, external nares; jpmx, jugal process of the maxilla; mpmx, midline premaxilla; mx, maxilla; na, nasal; pal, palatine; pmx, premaxilla; pter, pterygoid; to, tooth; up, uncinate process of the ectopterygoid; vm, vomers.
