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Boyer diss 2009 1046..

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Figure 2.11. USNM 309902 Nannodectes intermedius: A, stereophotographic lateral view<br />

of left basicranial fragment. B, lateral basicranial fragment. C, inset of left petrosal. C’,<br />

enlargement of inset C. D, HRxCT coronal slice number 207. E, three views of HRxCT<br />

renderings of left petrosal. Nerves reconstructed in yellow represent components of<br />

tympanic plexus. Neurovasculature reconstructed in red represents components of<br />

internal carotid plexus. Anterior to top in all parts. Fine dashed line – g3 groove.<br />

Numbers and abbreviations: 44 – crista tympanica, , 47 – ventrally projecting lateral<br />

processes of basioccipital, 48 – right occipital condyle, 49 – foramen magnum, 51 –<br />

nuchal crest. ac – aperture of cochlear fenestra; av – aperture of fenestra vestibuli; Boc –<br />

basioccipital; Bul – auditory bulla; ccA - broken open aperture of cochlear canaliculus; ps<br />

– posterior septum; ec – epitympanic crest; g1 – groove for internal carotid plexus; g3 -<br />

groove that leads to s2 (for a small vein?); Ptr – petrosal; s1 – first (anterior) septum; s2 –<br />

second septum; Soc – supraoccipital; tt – tegmen tympani.<br />

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