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Boyer diss 2009 1046..

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Figure 2.7. UALVP 46687 Pronothodectes gaoi: A, ventromedial view. B, ventral view.<br />

Note that unlabeled loop of nerves reconstructed here is not consistently visible in other<br />

specimens, but grooves labeled g1-5 are consistently visible. B’, enlarged ventral view of<br />

B with labels. C, lateral view. C’, enlarged lateral view of C with labels. Nerves<br />

reconstructed in yellow represent components of tympanic plexus. Neurovasculature<br />

reconstructed in red represents components of internal carotid plexus. Anterior is towards<br />

the top in all parts. Fine dashed line – g3 groove. Numbers and abbreviations: 20 –<br />

medial and rostral tympanic processes of petrosal, 21 – tympanic and mastoid canaliculus<br />

foramen. av – aperture for fenestra vestibuli; ps – posterior septum; g1 – groove for<br />

internal carotid plexus; g2 – groove for distal part of internal carotid plexus; g3 - groove<br />

that leads to s2 (for a small vein?); g4 - groove for tympanic plexus fibers to reach routes<br />

g1-3; g5 – groove that leads toward epitympanic crest; hf – hiatus fallopii; pcf – posterior<br />

carotid foramen; ppp – paroccipital process of petrosal; Ptr – petrosal.<br />

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