THE UNIVERSITY OF CALGARY Eric Snively A ... - Ohio University

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Figure 4.5. Strain distribution in left metatarsus of Gorgosaurus libratus (anterior view), loaded at 90 degrees to the substrate with forces four times body weight. Red lines point to high compressive strain (signified by bright yellow) on the proximal splint of MT III, and at the position of intermetarsal ligament correlates, visible on the anterolateral edge of MT III. Artifactual strain is evident on elements with long edges perpendicular to the compressive force (see text and Figure 4.4).
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THE UNIVERSITY OF CALGARY Functiona
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Many figures in this thesis use col
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ACKNOWLEûGEM ENTS Many friends and
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Approval page Acknowledgements Tabi
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CONCLUDING COMMENTS Figures for Cha
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CHAPTER 5: Mechanical and phylogene
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LIST OF FIGURES Figure 1 .l. Phylog
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Figure 3.6. Osteological correlates
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AMNH GI HMN IVPP MOR NMC OMNH PIN P
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and constructional morphology revea
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1985, Bryant and Seymour 1990). If
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surfaces of a Tyrannosaurus rex spe
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3. Troodontidae (Figure 1.2): Trwdo
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Hypothesized functions of the tyran
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1. Atomization (Chapters 2 and 3).
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Figure 1.1. P hylogenetic diagram o
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Figure 1.2. Phylogenetic diagram of
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Figure 1 .S. Skeletal restorations
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did not quantify the degree of prox
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qualitative debate over arctometata
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This hypothesis focuses on tyrannos
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Table 2.1. Theropod and Plafeosauru
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specimens in the figures reflects a
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were not attempted. While this limi
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Chapter 3). 1 now address variation
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- Ç6'P 1 68'€tr 1 L'OC 99'66 L'9
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Table 2.3: Log-transformed values f
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experiences a sharp laterally indin
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ecause it can be cursorily dassifie
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arctometatarsalian specimens, the l
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) Shaf€ and region of proximal ar
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a) Ginglymus. Figure 2.14 shows the
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) Shaft and region of proximal arti
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measurements of width pV2S%TU-DE an
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Table 2.4b Variancelmeasurement eac
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the largest sum of linear measureme
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Table 2.5: Specimen statistics Herr
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and Sinraptor dongi specimens. With
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In addition, a hook like proximal a
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oth physical narrowing and elongati
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1s the MT 111 shape segregation fun
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tyrannosaurids, ornithomimid, and t
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proximal constriction, white EImisa
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Figure 2.2. Tyrannosaurid, trwdonti
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Figure 2.4. Dromaeosaurid and carno
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- Anterior (flexor) surface medial
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Figure 2.7. Left MT III of Tyrannos
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Figure 2.8. Left MT III of Gorgosau
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Figure 2.9. Left MT III of an omith
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Figure 2.10. Left metatarsus of Tmd
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Figure 2.1 1. Left MT III of Elmisa
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Figure 2.12. Right MT III of Deinon
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Figure 2.13. Left MT III of Allosau
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Figure 2.14. Left metatarsus of Sin
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Figure 2.15. Plots of MT Ill specir
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Figure 2.16. Plot of third metatars
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tv . ... . Ri. . . .
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Figure 2.19. Plot of third metatars
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CHAPTER 3: Tensile keystone model o
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dynamically transmitted Iommotor fo
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Table 3.1 . Metatarsi examined in t
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interrnetatarsal dynamics in these
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compelled analysis of movement evid
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Once prepared, TMP 94.1 2.602 and i
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Daspletosaurus tomsus (MOR 590), an
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2. Freedom of movement inferred fro
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Table 3.2. Surface areas of intemet
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phylogenetic bracketing Wtmer 1995)
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4) Forces from anterior displacerne
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e expected for tyrannosaurid interm
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The preceding discussion derives fr
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weapons sparring), and the arctomet
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Figure 3.1. Schematic representatio
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Figure 3.3. CT reconstruction of ri
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Figure 3.5. MT II (left element) an
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Figure 3.1 1 ae. The metatarsal rec
Page 187: Figure 3.13. Ligament contribution
Page 191 and 192: Figure 3.15. Anatorny of the equid
Page 193: Figure 3.16. Cornparison of loading
Page 196 and 197: (nodes), and solving stresslstrain
Page 198 and 199: The practicality of the finite elem
Page 200 and 201: collective density of trabeculae (K
Page 202 and 203: A FORCE INPUTS AND MATERIAL PROPERT
Page 204 and 205: Alexander et al. (1 979) rewrded a
Page 206 and 207: The preceding loading regime entait
Page 208 and 209: detemined by using the photographic
Page 210 and 211: 2. Preparation of data for contour
Page 212 and 213: . - Elastic modulus (GP4 Ex EY Ez P
Page 214 and 215: conversion. Volume-to-nuages facili
Page 216 and 217: maintained. An angle of 2 degrees p
Page 218 and 219: of MT III (Figure 4.4, pinpointed b
Page 220 and 221: anterodorsal rotation of the distal
Page 222 and 223: allowed to stretch slightly under t
Page 224: Figure 4.1. Initial loads and bound
Page 228: Figure 4.3. Finite element mesh of
Page 234: Figure 4.6. Strain distribution in
Page 237 and 238: The analyses of the Gorgosaurus Iib
Page 239 and 240: individual organs with ideally effi
Page 241 and 242: These considerations of ligament mo
Page 243 and 244: The precise scaling of metatarsal l
Page 245 and 246: tenable from the available evidence
Page 247 and 248: equivalent horsepower, 15 economy c
Page 249 and 250: Other aptations refiect multiple fu
Page 251 and 252: This and other systernatically info
Page 253 and 254: (Russell 1975, McGregor 2000). Meta
Page 255 and 256: was the default developmental patte
Page 257 and 258: Arnong dromaeosaurids and birds, th
Page 259 and 260: hypothesis. Fossil evidence of basa
Page 261 and 262: suggestive of grasping ability. Neo
Page 263 and 264: available evidence without propriet
Page 265: Figure 5.1. Phylogeny of the Therop
Page 277 and 278: LITERTURE ClTED Alexander R.M. 1977
Page 279 and 280: Carter D.R., Fyhrie, D.P., and Whal
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Galton P.M. 1982. Elaphrosaurus, an
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Hutchinson J.R., Stidham T.A., Sniv
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Novas F.E. 1993. New information on
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Stein B.R. and Casinos 1997. What i
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APPENDIX Principal Components Analy
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highest degree, and so on. Specimen
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THE UNIVERSITY OF CALGARY Eric Snively A ... - Ohio University

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