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329 results for “Penguins”
Fig. 26 in The Basal Penguin (Aves: Sphenisciformes) Perudyptes Devriesi And A Phylogenetic Evaluation Of The Penguin Fossil Record
Fig. 26. Humeri of selected penguin taxa, illustrating phylogenetic characters: the stem penguins (A) Palaeeudyptes gunnari (UCMP 321826), (B) Palaeospheniscus patagonicus (AMNH 3361), and (C) Perudyptes devriesi (MUSM 889), and (D) extant Pygoscelis antarctica (AMNH 2610). Lines illustrate the tangent to the radial and ulnar condyles. See appendix 5 for abbreviations. Scale bars 5 1cm. Images A and B reversed to aid comparison.
Fig. 10 in The Basal Penguin (Aves: Sphenisciformes) Perudyptes Devriesi And A Phylogenetic Evaluation Of The Penguin Fossil Record
Fig. 10. Reconstruction of Perudyptes devriesi diving, with preserved elements of the holotype indicated (left humerus, pelvis and left femur not shown). Silhouette by Kristin Lamm.
Fig. 7 in The Basal Penguin (Aves: Sphenisciformes) Perudyptes Devriesi And A Phylogenetic Evaluation Of The Penguin Fossil Record
Fig. 7. Pelvis and proximal portion of left femur of MUSM 889 in dorsal view. Scale bar 5 1 cm. See appendix 5 for abbreviations.
Fig. 3 in The Basal Penguin (Aves: Sphenisciformes) Perudyptes Devriesi And A Phylogenetic Evaluation Of The Penguin Fossil Record
Fig. 3. Line drawings of the cranium of MUSM 889 in same views as figure 2. See appendix 5 for abbreviations.
Fig. 11 in The Basal Penguin (Aves: Sphenisciformes) Perudyptes Devriesi And A Phylogenetic Evaluation Of The Penguin Fossil Record
Fig. 11. Strict consensus of 420 most parsimonious trees of 4492 steps fom the primary analysis. Bremer support values are indicated above branches. Support values reflect the low proportion of codable informative cells for several fossil taxa and the high proportion of missing data in all fossil taxa (all 6000+ molecular characters are missing data for all fossils). For a more complete understanding of support within extant clades, see Bertelli and Giannini (2005) and Baker et al. (2006).
Fig. 1 in The Basal Penguin (Aves: Sphenisciformes) Perudyptes Devriesi And A Phylogenetic Evaluation Of The Penguin Fossil Record
Fig. 1. Map showing the type locality of Perudyptes devriesi (star) and the extent of the Pisco Basin, with simplified stratigraphic column reflecting our current understanding of stratigraphy within the Pisco Basin (after Devries et al., 2006).
Fig. 9. Left tarsometatarsus MUSM 889 in The Basal Penguin (Aves: Sphenisciformes) Perudyptes Devriesi And A Phylogenetic Evaluation Of The Penguin Fossil Record
Fig. 9. Left tarsometatarsus MUSM 889 in (A) dorsal view, (B) distal view, and (C) plantar view. Note that because metatarsal IV is broken, the orientations of the trochleae in distal view are approximated. Scale bar 5 1 cm. See appendix 5 for abbreviations.
Fig. 29 in The Basal Penguin (Aves: Sphenisciformes) Perudyptes Devriesi And A Phylogenetic Evaluation Of The Penguin Fossil Record
Fig. 29. Pelves of selected penguin taxa, illustrating phylogenetic characters: the extant penguins (A) Spheniscus humboldti (AMNH 26165) and (B) Pygoscelis antarctica (AMNH 26160). See appendix 5 for abbreviations.
Fig. 13 in The Basal Penguin (Aves: Sphenisciformes) Perudyptes Devriesi And A Phylogenetic Evaluation Of The Penguin Fossil Record
Fig. 13. Strict consensus cladogram from analysis of 37 morphological characters by Walsh and Suárez (2006), designed to test the relationships of Pygoscelis grandis.
Fig. 24 in The Basal Penguin (Aves: Sphenisciformes) Perudyptes Devriesi And A Phylogenetic Evaluation Of The Penguin Fossil Record
Fig. 24. Scapulae of selected penguin taxa, illustrating phylogenetic characters: (A) the stem penguin Waimanu tuatahi (CM zfa34); (B) extant Eudyptes chrysolophus (AMNH 5974). Image A reprinted with permission from Slack et al. (2006). See appendix 5 for abbreviations.
Fig. 6 in The Basal Penguin (Aves: Sphenisciformes) Perudyptes Devriesi And A Phylogenetic Evaluation Of The Penguin Fossil Record
Fig. 6. Right carpometacarpus of MUSM 889 in (A) dorsal view, (B) ventral view, and (C) distal view. Scale bar 5 1cm. See appendix 5 for abbreviations.
Fig. 17 in The Basal Penguin (Aves: Sphenisciformes) Perudyptes Devriesi And A Phylogenetic Evaluation Of The Penguin Fossil Record
Fig. 17. Results of iterative analyses testing the effect of assigning character codings from isolated elements to species terminals. Strict consensus of 1920 MPTs of 4493 steps from the analysis applying codings from the Tonniornis mesetaensis holotype humerus to the Delphinornis gracilis terminal. In the results of the permutation for Delphinornis larseni (6390 trees of 4493 steps), the same strict consensus tree was recovered.
Fig. 25 in The Basal Penguin (Aves: Sphenisciformes) Perudyptes Devriesi And A Phylogenetic Evaluation Of The Penguin Fossil Record
Fig. 25. Coracoids of selected penguin taxa, illustrating phylogenetic characters: (A) the stem penguin Archaeospheniscus lowei (OM GL407); (B) extant Aptenodytes forsteri (AMNH 3767). The bone is incomplete in A, causing the proximal end to appear less widened. Broken edges suggest that the coracoid fenestra was originally completely enclosed in A. Scale bars 5 1 cm. See appendix 5 for abbreviations.
Fig. 16 in The Basal Penguin (Aves: Sphenisciformes) Perudyptes Devriesi And A Phylogenetic Evaluation Of The Penguin Fossil Record
Fig. 16. Strict consensus of 480 MPTs of 4494 steps from the analysis including the type B humerus (IB/P/B-0382) as a separate terminal.
Fig. 23 in The Basal Penguin (Aves: Sphenisciformes) Perudyptes Devriesi And A Phylogenetic Evaluation Of The Penguin Fossil Record
Fig. 23. Quadrates of selected penguin taxa, illustrating phylogenetic characters: (A) the stem penguin Icadyptes salasi (MUSM 897); (B) extant Spheniscus demersus (NSM 6294). See appendix 5 for abbreviations.
Fig. 30 in The Basal Penguin (Aves: Sphenisciformes) Perudyptes Devriesi And A Phylogenetic Evaluation Of The Penguin Fossil Record
Fig. 30. Tarsometatarsi of selected penguin taxa, illustrating phylogenetic characters: the stem penguins (A) Waimanu manneringi (CM zfa35), (B) Palaeeudyptes klekowskii (UCMP 321486), and (C) Anthropornis sp. (UCMP 321023), and (D) extant Spheniscus magellanicus (AMNH 24679). Scale bars 5 1 cm. See appendix 5 for abbreviations.
Fig. 15 in The Basal Penguin (Aves: Sphenisciformes) Perudyptes Devriesi And A Phylogenetic Evaluation Of The Penguin Fossil Record
Fig. 15. Results of iterative analyses testing the effect of assigning character codings from isolated elements to species terminals. Strict consensus of 1503 MPTs of 4494 steps from the analysis applying codings from IB/P/B-0382 (type B humerus) to the Marambiornis exilis terminal. An identical strict consensus topology resulted from the permutations adding the type B humerus codings to the Mesetaornis polaris terminal.
Fig. 12 in The Basal Penguin (Aves: Sphenisciformes) Perudyptes Devriesi And A Phylogenetic Evaluation Of The Penguin Fossil Record
Fig. 12. Single most parsimonious tree from analysis of 44 morphological characters by Acosta Hospitaleche et al. (2007, 2008).
Fig. 21 in The Basal Penguin (Aves: Sphenisciformes) Perudyptes Devriesi And A Phylogenetic Evaluation Of The Penguin Fossil Record
Fig. 21. Phylogeny of Sphenisciformes calibrated to the stratigraphic record. Ghost lineages (Norell, 1992) are minimized. Dotted lines extending the range of clade 7 are based on identification of fragmentary fossils of late Eocene age to this clade. We utilize age ranges for Spheniscus urbinai and Spheniscus megaramphus provided by Stucchi (2007). Most penguins from the La Meseta Formation occur in Telm 7 (34.2–36.1 Ma), but a few species have been reported from lower units (see Myrcha et al., 2002; Jadwiszczak, 2006a), accounting for the extended ranges of Delphinornis larseni, Anthropornis grandis, and Palaeeudyptes gunnari. A specimen from the Chilcatay Formation (see fig. 1) referred to Palaeospheniscus sp. by Acosta Hospitaleche and Stucchi (2005) is provisionally referred to Palaeospheniscus patagonicus (Ksepka, 2007), accounting for the longer range of this taxon. For taxa that are poorly constrained in age, the midpoint of possible ages is used (e.g., Marplesornis is placed at the late Miocene). Geographical locality for fossil taxa and breeding range of extant taxa are provided in parentheses following taxa names. Asterisks indicate taxa with extensive breeding ranges including oceanic islands (see Bertelli and Giannini [2005] for more data on these species). Abbreviations: AF, Africa; AN, Antarctica; AU, Australia; NZ, New Zealand and surrounding islands; SA, South America.
Fig. 19 in The Basal Penguin (Aves: Sphenisciformes) Perudyptes Devriesi And A Phylogenetic Evaluation Of The Penguin Fossil Record
Fig. 19. Results of iterative analyses testing the effect of assigning character codings from isolated elements to species terminals. Strict consensus of 930 MPTs of 4493 steps from the analysis applying codings from the Tonniornis mesetaensis holotype humerus to the Mesetaornis polaris terminal. An identical strict consensus topology resulted from the permutations adding the Tonniornis mesetaensis humerus codings to the Mesetaornis polaris terminal.
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