Boyer diss 2009 1046..

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

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Figure 3.11. Right ectotympanic fragment of Plesiadapis cookei (UM 87990) in stereophotographic A, ventral (medial to top); B, medial (dorsal to top - labeled view to right); C, dorsal (medial to bottom); and D, lateral views (dorsal to bottom). Numbers and abbreviations: 40 – tubular external auditory meatus, 41 – crista tympanica, 42– bony struts supporting crista tympanica. 236

Figure 3.12. Right dentary of Plesiadapis cookei (UM 87990) in A, buccal; B, lingual; and C, stereophotograph occlusal views. On A and B, note lack of margoconid on I 1 . On C, note trigonid basin of P 4 . 237

Figure 3.11. Right ectotympanic fragment of Plesiadapis cookei (UM 87990) in<br />

stereophotographic A, ventral (medial to top); B, medial (dorsal to top - labeled view to<br />

right); C, dorsal (medial to bottom); and D, lateral views (dorsal to bottom). Numbers and<br />

abbreviations: 40 – tubular external auditory meatus, 41 – crista tympanica, 42– bony<br />

struts supporting crista tympanica.<br />

236

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