Boyer diss 2009 1046..

Boyer diss 2009 1046.. Boyer diss 2009 1046..

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Figure 4.18. Box plot of metacarpal head shapes [HSV = ln(DEW/DED)] of plesiadapids. Note that the metacarpal heads undoubtably attributed to plesiadapids are relatively mediolaterally wide compared to the “set 2” MC II-IV. However, the “set 1” MC II-III and MC V are closer to or in the range of those of certain plesiadapids. Even though the “set 2” MC V head is in the range of known plesiadapids, cluster and principal component analyses effectively rule it out as belonging to P. cookei. 458

Figure 4.19. Plesiadapis cookei (UM 87990). Stereophotographic views of incomplete proximal phalanges. A, proximal end of left hallucal proximal phalanx; B, distal end of a proximal phalanx; C-D, proximal ends of proximal phalanges; and E-G, distal ends of proximal phalanges. Also preserved are a proximal fragment of the right hallucal proximal phalanx and a badly eroded shaft of what may be a pollical proximal phalanx. 459

Figure 4.19. Plesiadapis cookei (UM 87990). Stereophotographic views of incomplete<br />

proximal phalanges. A, proximal end of left hallucal proximal phalanx; B, distal end of a<br />

proximal phalanx; C-D, proximal ends of proximal phalanges; and E-G, distal ends of<br />

proximal phalanges. Also preserved are a proximal fragment of the right hallucal<br />

proximal phalanx and a badly eroded shaft of what may be a pollical proximal phalanx.<br />

459

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