Boyer diss 2009 1046..

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

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Figure 3.4. 224

Figure 3.4. Cranium of Plesiadapis cookei (UM 87990). A, stereophotographic left lateral view. B, HRxCT left lateral view reconstruction shown without parallax. C, inset of lateral splanchnocranium. C’, enlargement of inset C. D, inset of basicranium. D’, enlargement of inset D. Hatches indicate broken surfaces. Fine dashed lines represent sutures and solid lines indicate major discontinuities on the specimen’s surface. Numbers and abbreviations: 1– premaxilla/nasal suture, 2 – premaxilla/maxillary suture, 4 – lacrimal/frontal suture in orbit, 11 – infraorbital foramen, 12 – zygomatic/maxillary suture, 13 – edge of orbital excavation on zygomatic bone, 17 – frontal/parietal suture, most anterior part, 24 – sagittal crest, 25 – nuchal crest, 27 – glenoid fossa, 28 – postglenoid process, 30 – entoglenoid process, 38 – digastric fossa, stylomastoid foramen area (?), 39 – paroccipital process (mastoid process) of petrosal, 40 – tubular external auditory meatus, 44 – occipital condyle; Bul – auditory bulla; Eoc – exoccipital; Fr – frontal; Lc – lacrimal; Mx – maxilla; Ns – nasal; Pa – parietal; Sq – squamosal; Zy – zygomatic. 225

Figure 3.4. Cranium of Plesiadapis cookei (UM 87990). A, stereophotographic left lateral<br />

view. B, HRxCT left lateral view reconstruction shown without parallax. C, inset of<br />

lateral splanchnocranium. C’, enlargement of inset C. D, inset of basicranium. D’,<br />

enlargement of inset D. Hatches indicate broken surfaces. Fine dashed lines represent<br />

sutures and solid lines indicate major discontinuities on the specimen’s surface. Numbers<br />

and abbreviations: 1– premaxilla/nasal suture, 2 – premaxilla/maxillary suture, 4 –<br />

lacrimal/frontal suture in orbit, 11 – infraorbital foramen, 12 – zygomatic/maxillary<br />

suture, 13 – edge of orbital excavation on zygomatic bone, 17 – frontal/parietal suture,<br />

most anterior part, 24 – sagittal crest, 25 – nuchal crest, 27 – glenoid fossa, 28 –<br />

postglenoid process, 30 – entoglenoid process, 38 – digastric fossa, stylomastoid foramen<br />

area (?), 39 – paroccipital process (mastoid process) of petrosal, 40 – tubular external<br />

auditory meatus, 44 – occipital condyle; Bul – auditory bulla; Eoc – exoccipital; Fr –<br />

frontal; Lc – lacrimal; Mx – maxilla; Ns – nasal; Pa – parietal; Sq – squamosal; Zy –<br />

zygomatic.<br />

225

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