FIGURE 2 in Novel evolution of a hyper‐elongated tongue in a Cretaceous enantiornithine from China and the evolution of the hyolingual apparatus and feeding in birds

FIGURE 2 Photograph and line drawing of the skull of the holotype specimen of Brevirostruavis macrohyoideus (IVPP V13266). Anatomical abbreviations: an, angular; ar, articular; at, atlas; ax, axis; bp, basisphenoid process; bs, basisphenoid; cb, ceratobranchial; cr, cervical rib; cv, cervical; de, dentary; dr, descending ramus; ep?, ectopterygoid?; fr, frontal; la, lacrimal; ju, jugal; ma, maxillae; na, nasal; op, occipital process; pa, parietal; pm, premaxilla; pt?, pterygoid?; qu, quadrate; sa, surangular; and to, tooth