Boyer diss 2009 1046..

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cranial measurements are generally accurate to at least a tenth of a millimeter. These measurements were used to compare shape and size differences between Plesiadapis cookei (UM 87990) and other plesiadapids. In order to assess possible dietary differences, digital surface models were created from HRxCT scans of teeth and analyzed. The data were processed according to methods in Boyer (2008) and Evans et al. (2007). Two analyses were undertaken using these images: (1) Two and three dimensional tooth crown surface area measurements from M 2 ’s were used to calculate relief indices (Boyer, 2008); and (2) The software SurferManipulator (Evans et al., 2007) was used to calculate the complexity of the occlusal surface via a metric called an orientation patch count (OPC) (Evans et al. 2007) (Table 3.4). Relief indices and OPC’s have higher values in taxa that include greater proportions of structural carbohydrate in their diets (Evans et al. 2007; Boyer, 2008). Thus these metrics provide a means for estimating dietary differences among plesiadapids. 184
SYSTEMATIC PALEONTOLOGY Class MAMMALIA Order PRIMATES Linnaeus, 1758 Family PLESIADAPIDAE Trouessart, 1897 PLESIADAPIS Gervais, 1877 PLESIADAPIS COOKEI Jepsen, 1930 Type YPM PU 13292, associated right and left dentaries, right maxilla, one upper and one lower incisor from the little Sand Coulee area (Sec. 32, T 57 N, R 101 W, Park Co.), Big Horn Basin, Wyoming. Referred specimen UM 87990 (Figs. 3.1-12), skull with associated dentaries and postcranial skeleton preserved in a limestone nodule at Locality SC-117, Fort Union Formation, middle Clarkforkian (late Paleocene biochron CF-2), Clarks Fork Basin, Wyoming. Description The craniodental material of UM 87990 was preliminarily described by Gingerich and Gunnell (2005:187) as preserved in five pieces, of which there was said to be a “palatal/splanchnocranial piece, a neurocranial piece with well-preserved auditory bullae ventrally, a frontoparietal piece, and two dentaries”. Since this description, additional preparation has been executed. The three skull pieces have been glued together. The 185
Page 1 and 2:
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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Page 157 and 158:
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Figure 2.15. AMNH 17388 Nannodectes
Page 161 and 162: Figure 2.16. AMNH 17388 Nannodectes
Page 163 and 164: Figure 2.18. MNHN CR 125 Plesiadapi
Page 167 and 168: Figure 2.22. MNHN CR 965, Plesiadap
Page 175 and 176: Figure 2.26. Pellouin skull Plesiad
Page 183 and 184: Figure 2.30. MaPhQ 33y Adapis paris
Page 187 and 188: Figure 2.32. SBU MRd-12 Sciurus car
Page 189 and 190: Figure 2.33. UMMZ 58983 Tupaia glis
Page 191 and 192: Figure 2.34. Boyer coll. Marmota mo
Page 193 and 194: Figure 2.35. UMMZ TS13 Lagostomus m
Page 195 and 196: Figure 2.36. AMNH 41527 Lagostomus
Page 197 and 198: Figure 2.37. AMNH 185638 Indri indr
Page 199 and 200: Figure 2.38. USNM 482353 Ignacius c
Page 201 and 202: Figure 2.39. UM 108207 Acidomomys h
Page 203 and 204: Figure 2.40. Reconstruction of ples
Page 205 and 206: CHAPTER 3: DESCRIPTION OF THE FIRST
Page 207 and 208: these species. Changing ecological
Page 209 and 210: Institutional abbreviations AMNH, A
Page 211: Methods of examination and document
Page 215 and 216: Premaxilla and premaxillary dentiti
Page 217 and 218: nerve and vessels in life (Fig. 3.5
Page 219 and 220: identifiable. No ethmoid foramina c
Page 221 and 222: process is quite large, projecting
Page 223 and 224: vestibuli. This groove’s point of
Page 225 and 226: 9: 40). The right side reveals an a
Page 227 and 228: e seen as a wedge-shaped, rugose de
Page 229 and 230: process appears as solid bone. Admi
Page 231 and 232: 16) for P. tricuspidens and Rose (1
Page 233 and 234: DENTAL FUNCTIONAL MORPHOLOGY OF P.
Page 235 and 236: Lower premolar molarization As indi
Page 237 and 238: SUMMARY AND CONCLUSION The skull of
Page 239 and 240: REFERENCES Bloch, J.I., Boyer, D.M.
Page 241 and 242: TABLES Table 3.1. List of anatomica
Page 243 and 244: Table 3.2. Anatomical abbreviations
Page 245 and 246: Table 3.3. Size comparison among pl
Page 247 and 248: Table 3.4 continued. European plesi
Page 249 and 250: Figure 3.1. Cranium of Plesiadapis
Page 251 and 252: Figure 3.3. Right maxillary teeth (
Page 259 and 260: Figure 3.8. Fragment from right nuc
Page 261 and 262: Figure 3.9. Right promontorium of P
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Figure 3.10. Cranium of Plesiadapis
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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
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to the peroneal surface. The perone
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could even be described as having t
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Function.—The functional features
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flexor fibularis groove surface. Ex
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tubercle, which is centrally locate
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Cuboid Description.—The right cub
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Ectocuneiform Description.—A left
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Metatarsals Hallucal metatarsal des
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articulation with the entocuneiform
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medial side facet on MT IV from a v
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Vertebral column Vertebral column d
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measurements, see caption of Fig. 4
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transverse processes, and the poste
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taxa appear to have slightly more p
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dorsoventrally than craniocaudally.
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The zygapophyses increase in size b
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vertebrae. It is also similar to th
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identifications have been reversed.
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preserved. The ribs are slender and
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Carpolestes simpsoni (UM 101963) an
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third metacarpal, similar to arbore
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autapomorphy, because it appears th
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Jenkins (1974) found that Tupaia gl
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Nannodectes and other plesiadapids,
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are consistent with more frequent u
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differences generated from informat
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Perry, M. Silcox, R. Secord and man
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ubriventer: implications for the fu
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Linnaeus, C., 1758. Systema naturae
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Stern, J.T.,Jr., 1988. Essentials o
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Table 4.3A. Measurements of the pro
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Table 4.3C. Comparative shape varia
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Table 4.5A. Measurements and shape
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Table 4.10. Measurements and shape
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Table 4.13. Measurements of plesiad
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Table 4.17B. Measurements of the di
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Table 4.18B. Measurements of the di
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Table 4.20B. Measurements 11-18 of
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Table 4.21A. Measurements 1-10 and
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Table 4.23. Measurements and shape
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Table 4.35. Body segment lengths (m
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Table 4.37A. Parameters for Gingeri
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Table 4.38C. Summary of plesiadapid
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Appendix Table 4.1B. Plesiadapis co
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Appendix Table 4.3. Other plesiadap
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Figure 4.2. Plesiadapis cookei (UM
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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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Page 497:
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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
Page 548 and 549:
Re-coding and optimization of crani
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and paromomyids. This, however, is
Page 552 and 553:
REFERENCES Beard, K.C., 1989. Postc
Page 554 and 555:
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
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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
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Coleman, M. N. and Boyer, D.M. 2008
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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.
Page 596 and 597:
Szalay, F.S., Drawhorn, G., 1980. E
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