122 



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SN3 — LMte^«^ 



NA5 



Fig. 76: Lateral view of neural 

 arches and spines of anterior 

 vertebrae, neural complex, 

 and supraneural bones of 

 Phoxinus. A: P. issykkulensis 

 (P- 10696, 42.4 mm SL); B: P. 

 erythrogaster (KU 5773. 51.5 

 mm SL); C: P. neogaeus (KU 

 8521, 53.0 mm SL): D: P. 

 tennesseensis (UT 44.5274. 

 50.0 mm SL). Scale bars = 1 

 mm. 



base of the rib is expanded, but the rib's ventral end is sharp. The rib bears a large and 

 shallow notch at its median side in P. eos (TS 169[1]; Fig.77A); the notch is absent in 

 other species of Phoxinus and in the outgroups (TS 169[0]). 



The os Suspensorium is developed and plate-like. The left and right os suspensoria are not 

 fused mesially, and a space exists between the dorsal margin of the os Suspensorium and 

 the centrum of vertebra 4. The ventral end of the os Suspensorium is at the same level of 

 the ventral end of rib 4. Variation occurs in several aspects of the os Suspensorium in Pho- 

 xinus. The os Suspensorium is narrow in P. tennesseensis, neogaeus, erythrogaster, eos. 



NS5 



