Figure 3 in Oldest fossil loon documents a pronounced ecomorphological shift in the evolution of gaviiform birds

Figure 3. Nasidytes ypresianus gen. et sp. nov. from the early Eocene London Clay of Walton-on-the-Naze (Essex, UK), sternum, pectoral girdle bones and vertebrae of the holotype (NMS.Z.2021.40.24), in comparison to fossil and extant Gaviiformes. A‒D, N. ypresianus, sternum in ventral (A), dorsal (B), left lateral (C) and cranial (D) view. E, F, N. ypresianus, furcula in caudolateral (E) and caudal (F) view. G, H, Gavia stellata (SMF 7241), furcula in caudolateral (G) and caudal (H) view. I, J, N. ypresianus, right coracoid in dorsal (I) and ventral (J) view. K, left coracoid of Colymboides anglicus (holotype, NHMUK A 30330) from the late Eocene of England in dorsal view. L, right coracoid of G. stellata (SMF 7241) in dorsal view. M, N. ypresianus, right scapula in lateral view. N, right scapula of G. stellata (SMF 7241) in lateral view. O, P, N. ypresianus, thoracic (O) and caudal (P) vertebrae. Abbreviations: acr, acromion; apf, apophysis furculae; car, carina sterni; cvx, convexity on medial margin of extremitas sternalis; exo, extremitas omalis; exs, extremitas sternalis; fns, foramen nervi supracoracoidei; pct, processus costales; pla, processus lateralis; plc, pleurocoel; ppc, processus procoracoideus; spe, spina externa; trv, processus transversus. Scale bars: 10 mm.Published as part of Mayr, Gerald & Kitchener, Andrew C., 2022, Oldest fossil loon documents a pronounced ecomorphological shift in the evolution of gaviiform birds, pp. 1431-1450 in Zoological Journal of the Linnean Society (Zool. J. Linn. Soc.) 196 (4) on page 1436, DOI: 10.1093/zoolinnean/zlac045, http://zenodo.org/record/739062