FIGURE 4 in New fossil birds from the earliest Eocene of Mongolia

FIGURE 4. Comparison of the left quadrates of Pan-Mirandornithes, including digital rendering from CT data and line drawings of the proposed Mongolian pan-mirandornithine, IGM 100/1418, in A, B, lateral; F, G, medial; K, L, caudal; and P, Q, ventral views; Chilean Flamingo Phoenocopterus chilensis (TMM M-5325) in C, lateral; H, medial; M, caudal; and R, ventral views; Eared Grebe Podiceps nigricollis (TMM M-1394) in D, lateral; I, medial: N, caudal; and S, ventral views; and line drawings of Palaelodus ambiguus (GPIM Op 395) based on photographs in Mayr (2015) in E, lateral; J, medial; O, caudal, and T, ventral views. Abbreviations: bf, basiorbital fossa; bpf, basiorbital pneumatic foramina; c, caudal condyle; cfm, convex articular facet of medial condyle; i, intercapitular incisure; l, lateral condyle; m, medial condyle; mc, medial crest; mp, medial process; o, otic facet; or, orbital process; ot, otic process; paf, pterygoid articular facet; pc, pterygoid condyle; qc, quadratojugal cotyle; rpf, rostromedial pneumatic foramina; s, squamosal facet; tc, tympanic crest; vqf, ventral quadratojugal facet. Scale bars = 2 mm.