Boyer diss 2009 1046..

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

pages.nycep.org
from pages.nycep.org More from this publisher
01.09.2014 Views

Figure 4.7. Plesiadapis cookei (UM 87990). Stereophotographic views of the proximal row of carpal bones. A, right scaphoid; B, right lunate; C, right triquetrum; and D, right pisiform. 442

Figure 4.8. Surface reconstructions of the proximal row of carpal bones of Plesiadapis cookei (UM 87990), with comparison to the scaphoid of Nannodectes intermedius (USNM 442229), based on HRxCT reconstructions [HRxCT resolution = 0.018 mm (cubic voxels)]. Articular surfaces and other regions are identified with gray shading and labeled with numbers on the scaphoids: 1 – shelf-like facet that may contact distal carpal row during dorsiflexed postures of the midcarpal joint, 2 – articular surface for distal carpal bones including hamate, capitate, centrale, trapezoid and trapezium, 3 – lunate facet, 4 – possibly a non-articular area or extension of lunate facet (this appears to be the area Beard (1989) interpreted as the triquetrum facet of the N. intermedius, but this interpretation is almost certainly incorrect), and 5 – radius articular facet. Abbreviations: Fg – flexor tendon groove, Lu – lunate, Sc – scaphoid, ScT – scaphoid tubercle, and Tr – triquetrum. 443

Figure 4.7. Plesiadapis cookei (UM 87990). Stereophotographic views of the proximal<br />

row of carpal bones. A, right scaphoid; B, right lunate; C, right triquetrum; and D, right<br />

pisiform.<br />

442

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!