129 



gopophyses. The prezygopophysis is located anteriorly to the neural arch, and decreases 

 in size posteriorly, though the prezygopophysis on vertebra 5 is smaller than that on ver- 

 tebra 6. The postzygopophysis is located at the posterior margin of the neural arch and 

 articulates with the prezygopophysis of the next vertebra. The postzygopophysis is smal- 

 ler than the prezygopophysis of the same vertebra; it is posteriorly directed, and slightly 

 increasing in size posteriorly. The neural spines placed ventrally to the dorsal pterygio- 

 phores are shorter than those of the neural spines located anteriorly and posteriorly to the 

 dorsal fin. Ribs ventrolateral^ articulate with the parapophyses of the vertebrae. 



Fig. 82: Dorsal view of pterotic, epioccipital, posttemporal, and supracleithrum of Phoxinus. A: P. eos 

 (KU 12255, 43.0 mm SL); B: P. phoxinus (KU 22856, 58.0 mm SL); C: P. cumberlandensis (KU 

 18934, 52.0 mm SL); D: P. oreas (KU 3259, 52.2 mm SL). Scale bars = 1 mm. 



