Fig. 4 in A New Carinate Bird from the Late Cretaceous of Patagonia (Argentina)

Fig. 4. Limenavis patagonica, holotype (PVL 4731). Right proximal carpometacarpus, distal ulna, radiale and ulnare (A–C), right distal carpometacarpus (D–F), and phalanx 1 of right digit II (G–H). A, dorsal view of carpometacarpus, with caudal surface of distal ulna; B, ventral view of carpometacarpus with ventral ramus of ulnare; C, proximal view of carpometacarpus with attached radiale; D, H, dorsal; E, G, distal; and F, ventral views. acf anterior carpal fovea, exp extensor process; fdI articular facet for first phalanx, digit I; fdII articular facet for first phalanx, digit II; fdIII articular facet for first phalanx, digit III; inf infratrochlear fossa; pip pisiform process; rae radiale; ras radial articular surfac; sdc sulcus m. digitorum communis; sid sulcus m. interosseus dorsalis; siv sulcus m. interosseus ventralis; spf supratrochlear fossa; tpg tendinal pit and groove; ule ulnare; uln ulna; vdp ventral distal process; vtg ventral tendinal groove.