Figure 3 in Phylogenetic affinities and taxonomy of the Oligocene Diomedeoididae, and the basal divergences amongst extant procellariiform birds

Figure 3. Selected skeletal elements of Rupelornis definitus in comparison to extant Procellariiformes. A–C, R. definitus, fragmentary pelvis (IRSNB Av 109l) in ventral (A), lateral (B), and dorsal (C) views. D, E, pelvis of D, Diomedea antipodensis (Diomedeidae) and E, Calonectris diomedea (Procellariidae). F–H, R. definitus, left femur (IRSNB Av 112e) in cranial (F), medial (G), and caudal (H) views. I, J, left femur (caudal view) of I, Fregetta tropica (Oceanitinae) and J, D. antipodensis. Abbreviations: cid, crista iliaca dorsalis; css, crista spinosa synsacri; ctr, crista trochanteris; faa, facies articularis antitrochanterica; fit, foramina intertransversaria; fos, fossa distal of facies articularis antitrochanterica; iob, impressiones obturatoriae; lca, linea intermuscularis caudalis; lcr, linea intermuscularis cranialis; tmg, tuberculum musculi gastrocnemialis lateralis. Fossil bones are coated with ammonium chloride. Scale bars = 10 mm.