Boyer diss 2009 1046..

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Thus, it is imperative that more skeletal materal for Plesiadapis be recovered and described. Likewise, more information on other plesiadapiforms and larger, more diverse comparative samples should be assembled and analyzed. Uncertainty acknowledged, it can be said that appendicular postcranial morphology of P. cookei is pervasively suggestive of a committed arboreal lifestyle, although “sloth-like” suspensory postures were probably used infrequently, if ever. A natural and possibly frequently used posture is illustrated in Figure 6.1. The axial skeleton does not contradict an arboreal habitus, although it was unlike that of many suspensory animals. ACKNOWLEDGMENTS I am grateful to P. Gingerich, G. Gunnell, and J. Bloch for the opportunity to lead the study and description of UM 87990. P. Gingerich and W. Sanders facilitated and oversaw the production and provision of high quality casts of this specimen. S. Judex and C. Rubin provided HRxCT scans at the Center for Biotechnology of the Department of Biomedical Engineering at Stony Brook University. J. Groenke, J. Georgi and staff of the CT lab at Stony Brook University provided medical grade CT scans of the skeleton of UM 87990. J. Sertich of Stony Brook University provided access to a camera. S. Maiolino of Stony Brook University provided measurements on distal phalanges. M. Godinot, P. Tassy and C. Sagne of MNHN, and M. Pellouin provided access to important comparative specimens of Plesiadapis tricuspidens and Plesiadapis n. sp. S. Chester, C. Gilbert and E. Sargis of Yale University helped with access to comparative specimens. This research was enhanced by discussions with J. Bloch, P. Gingerich, M. Godinot, J. 390
Perry, M. Silcox, R. Secord and many other researchers. It was made possible by funding from a National Science Foundation grant to P. Gingerich and G. Gunnell (BCS- 0129601), a National Science Foundation grant to D. Krause and J. Bloch (EAR- 0308902), and a National Science Foundation Graduate Research Fellowship, an Evolving Earth Foundation grant, a National Science Foundation Doctoral Dissertation Improvement Grant (BCS-0622544), and an American Society of Mammalogists grant to D. <strong>Boyer</strong>. 391
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NEW CRANIAL AND POSTCRANIAL REMAINS
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Stony Brook University The Graduate
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postcranial anatomy more accurately
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Table of Contents List of Figures .
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Zygomatic. . . . . . . . . . . . .
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Zygomatic. . . . . . . . . . . . .
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Humerus . . . . . . . . . . . . . .
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Description . . . . . . . . . . . .
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Description . . . . . . . . . . . .
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Craniodental material of Plesiadapi
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Figure 2.25. MNHN CR 965 Plesiadapi
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Figure 4.24. UM 87990 Plesiadapis c
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Table List Chapter 2 Table 2.1. Num
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Table 4.30. Caudal vertebrae measur
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CHAPTER 1: INTRODUCTION Plesiadapif
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primates, sharing many dental featu
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were acquired. Specifically, the
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of the plesiadapiform skeleton. Ext
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Gervais, M.P., 1877. Enumération d
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Szalay, F.S., 1972. Cranial morphol
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CHAPTER 2: A REEVALUATION OF CRANIA
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Information on the cranium of basal
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petrosal bulla predicts that a sutu
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History of descriptive study of ple
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Gingerich (1971) rebutted Szalay (1
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9c, Gingerich (1976) labeled a groo
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portion of the bulla medial to the
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Bloch and Silcox (2006) described t
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MATERIALS AND METHODS Material exam
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whitening, dark and light areas on
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SYSTEMATIC PALEONTOLOGY Class MAMMA
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efore meeting a large, anteroposter
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The canine is a simple, single-root
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existence and/or nature of contacts
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outlined. This includes description
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eneath it while also extending post
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y a pair of parallel grooves (Fig.
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the skull (Fig. 2.1). The length of
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margin clearly had a posteriorly pr
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groove measures about 0.29 mm in di
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2.13: 50). The suture with the supr
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preserved (Fig. 2.15: 55). In fact,
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the posterior septum, a deeply inci
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Plesiadapis tricuspidens MNHN CR 12
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is roughly 2.8 mm long. Medial to t
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is not convoluted like many other s
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110) and the only squamosal/alisphe
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two regions for the internal jugula
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ventral to the sinuous suture (132)
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provides measurements of these and
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of the promontorium of the Pellouin
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seen on the HRxCT scan is expressed
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primates, as well as treeshrews and
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canaliculus are present on the sept
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it is missing from the other side o
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observations and interpretations ma
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REFERENCES Beard, K.C., 1993. Phylo
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Russell, D.E., 1959. Le crâne de P
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TABLES Table 2.1. Numerical list of
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81 - Occipital/petrosal suture (Fig
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Table 2.2. Abbreviations for crania
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Table 2.3a. Petrosal features of pl
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Table 2.4. List of cranial measurem
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Shape variables (Table 2.6) ac/GM -
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Table 2.5. continued Specimen MNHN
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Appendix Table 2.1. Specimens scann
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Fig. 2.39 - bs, Ptr, rtp, s1, s2 Fi
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Figure 2.1. UALVP 46685 Pronothodec
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Figure 2.8. USNM 309902 Nannodectes
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Figure 2.9. USNM 309902 Nannodectes
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Figure 2.10. USNM 309902 Nannodecte
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Figure 2.15. AMNH 17388 Nannodectes
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Figure 2.16. AMNH 17388 Nannodectes
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Figure 2.22. MNHN CR 965, Plesiadap
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Figure 2.26. Pellouin skull Plesiad
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Figure 2.30. MaPhQ 33y Adapis paris
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Figure 2.32. SBU MRd-12 Sciurus car
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Figure 2.33. UMMZ 58983 Tupaia glis
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Figure 2.34. Boyer coll. Marmota mo
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Figure 2.35. UMMZ TS13 Lagostomus m
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Figure 2.36. AMNH 41527 Lagostomus
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Figure 2.37. AMNH 185638 Indri indr
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Figure 2.38. USNM 482353 Ignacius c
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Figure 2.39. UM 108207 Acidomomys h
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Figure 2.40. Reconstruction of ples
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CHAPTER 3: DESCRIPTION OF THE FIRST
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these species. Changing ecological
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Institutional abbreviations AMNH, A
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Methods of examination and document
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SYSTEMATIC PALEONTOLOGY Class MAMMA
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Premaxilla and premaxillary dentiti
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nerve and vessels in life (Fig. 3.5
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identifiable. No ethmoid foramina c
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process is quite large, projecting
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vestibuli. This groove’s point of
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9: 40). The right side reveals an a
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e seen as a wedge-shaped, rugose de
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process appears as solid bone. Admi
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16) for P. tricuspidens and Rose (1
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DENTAL FUNCTIONAL MORPHOLOGY OF P.
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Lower premolar molarization As indi
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SUMMARY AND CONCLUSION The skull of
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REFERENCES Bloch, J.I., Boyer, D.M.
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TABLES Table 3.1. List of anatomica
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Table 3.2. Anatomical abbreviations
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Table 3.3. Size comparison among pl
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Table 3.4 continued. European plesi
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Figure 3.1. Cranium of Plesiadapis
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Figure 3.3. Right maxillary teeth (
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Figure 3.8. Fragment from right nuc
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Figure 3.9. Right promontorium of P
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Figure 3.12. Right dentary of Plesi
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Figure 3.14. A, Plot of relief inde
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CHAPTER 4: THE FIRST KNOWN SKELETON
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among plesiadapiforms (e.g., Szalay
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Institutional and collections abbre
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CaL - capitulum (of humerus) antero
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HSV - head shape variable = ln(DEW/
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MSD - mid-shaft dorsoventral or ant
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Ry - ray (as in “digit ray”) S-
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History of descriptive study of the
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illustrations of this material, exc
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astragalus and calcaneum was highly
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discussion of the femur indicates t
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supinator crests. He also noted tha
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that it may not even be an archonta
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unstudied material. Specifically, h
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5321), some metapodials (MNHN R 529
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Gingerich and Gunnell (1992) publis
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prehensility they provide, is an in
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euarchontans (Fig. 1.1). Their anal
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for comparison. These include isola
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plesiadapid samples have the same m
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Organization of results Each bone i
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Bloch and Boyer (2002) and N. inter
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clavicle reflects some basic aspect
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Humerus Description.—The right an
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epicondyle actually projects somewh
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cookei is absolutely longer than an
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tuberosity. This crest probably del
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olecranon process to estimate its t
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distinct, convex distal radial face
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of the midcarpal joint), and its pr
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(there is no evidence for more than
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matches the opposing facet on the t
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mobility at the trapezoid-trapezium
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Function.—The three proximal carp
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the bone presently being described:
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the “set 2” MC II is a larger,
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differs from MC II and III in havin
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even more pronounced. The distal en
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etween the distal carpals and the
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have stouter shaft diameters for th
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difference makes them more like kno
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antipronograde clinging postures, o
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foramina, and faces slightly proxim
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spine at the superior tip of the il
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the thigh (Gambaryan, 1974). The ha
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The femoral shaft is smooth, lackin
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lacking a lateral extension of its
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The anteromedial side of the tibial
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fibular notch and the strong crest
Page 367 and 368: to the peroneal surface. The perone
Page 369 and 370: could even be described as having t
Page 371 and 372: Function.—The functional features
Page 373 and 374: flexor fibularis groove surface. Ex
Page 375 and 376: tubercle, which is centrally locate
Page 377 and 378: Cuboid Description.—The right cub
Page 379 and 380: Ectocuneiform Description.—A left
Page 381 and 382: Metatarsals Hallucal metatarsal des
Page 383 and 384: articulation with the entocuneiform
Page 385 and 386: medial side facet on MT IV from a v
Page 387 and 388: Vertebral column Vertebral column d
Page 389 and 390: measurements, see caption of Fig. 4
Page 391 and 392: transverse processes, and the poste
Page 393 and 394: taxa appear to have slightly more p
Page 395 and 396: dorsoventrally than craniocaudally.
Page 397 and 398: The zygapophyses increase in size b
Page 399 and 400: vertebrae. It is also similar to th
Page 401 and 402: identifications have been reversed.
Page 403 and 404: preserved. The ribs are slender and
Page 405 and 406: Carpolestes simpsoni (UM 101963) an
Page 407 and 408: third metacarpal, similar to arbore
Page 409 and 410: autapomorphy, because it appears th
Page 411 and 412: Jenkins (1974) found that Tupaia gl
Page 413 and 414: Nannodectes and other plesiadapids,
Page 415 and 416: are consistent with more frequent u
Page 417: differences generated from informat
Page 421 and 422: ubriventer: implications for the fu
Page 423 and 424: Linnaeus, C., 1758. Systema naturae
Page 425 and 426: Stern, J.T.,Jr., 1988. Essentials o
Page 427 and 428: Table 4.3A. Measurements of the pro
Page 429 and 430: Table 4.3C. Comparative shape varia
Page 431 and 432: Table 4.5A. Measurements and shape
Page 433 and 434: Table 4.10. Measurements and shape
Page 435 and 436: Table 4.13. Measurements of plesiad
Page 439 and 440: Table 4.17B. Measurements of the di
Page 441 and 442: Table 4.18B. Measurements of the di
Page 443 and 444: Table 4.20B. Measurements 11-18 of
Page 445 and 446: Table 4.21A. Measurements 1-10 and
Page 447 and 448: Table 4.23. Measurements and shape
Page 455 and 456: Table 4.35. Body segment lengths (m
Page 457 and 458: Table 4.37A. Parameters for Gingeri
Page 459 and 460: Table 4.38C. Summary of plesiadapid
Page 461 and 462: Appendix Table 4.1B. Plesiadapis co
Page 463 and 464: Appendix Table 4.3. Other plesiadap
Page 465 and 466: Figure 4.2. Plesiadapis cookei (UM
Page 467 and 468: Figure 4.4. Plot of principal coord
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Figure 4.6. Surface reconstructions
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Figure 4.10. Surface reconstruction
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Figure 4.14. Plesiadapis cookei or
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Figure 4.17. Plot of principal coor
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Figure 4.19. Plesiadapis cookei (UM
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Figure 4.30 472
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Figure 4.31. Measurements of astrag
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Figure 4.33 476
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Figure 4.34. Measurements of calcan
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Figure 4.40. Stereophotographic vie
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Figure 4.46. 490
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Figure 4.47 492
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Figure 4.50. 496
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INTRODUCTION Bloch et al. (2007) an
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have a lacrimal bone that retains i
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Institutional abbreviations AMNH, A
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level cladogram. A total of 33 cran
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plesiadapiform Ignacius graybullian
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RESULTS Phylogenetic reconstruction
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Optimization of postcranial traits
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Therefore, character optimization r
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carpolestid bulla is not split into
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2008). I therefore changed the codi
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Re-coding and optimization of crani
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and paromomyids. This, however, is
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REFERENCES Beard, K.C., 1989. Postc
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Novacek, M.J., 1986. The skull of l
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TABLES Table 5.1. Dental characters
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Table 5.2. Dental character matrix.
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asisphenoid and basioccipital bones
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111 (p3). Deltopectoral crest of hu
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158 (p50). Metatarsal I facet on en
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Table 5.4C. Postcranial characters
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Table 5.7. Posterior carotid forame
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Figure 5.2. 542
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Figure 5.3 544
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Figure 5.4. Plot of posterior carot
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ostral end of the nasals) and prema
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its body size would fit predictions
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vertically-to-caudally projecting t
Page 582 and 583:
More generally speaking, this disse
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Figure 6.1. CT reconstruction of Pl
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BIBLIOGRAPHY Alexander, R.M., Jayes
Page 588 and 589:
Coleman, M. N. and Boyer, D.M. 2008
Page 590 and 591:
Godinot, M., Beard, K.C., 1991. Fos
Page 592 and 593:
MacPhee, R.D.E., 1981. Auditory Reg
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Savage, D.E., Russell, D.E., 1983.
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Szalay, F.S., Drawhorn, G., 1980. E
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