75 



Fig.40: Dorsal view of the frontal bone (A-C), and supraorbital, lateral ethmoid, mesethmoid, fron- 

 tal, and nasal bones (D-F) of Phoxinus. A: P. cumberlandensis (KU 18934, 52.0 mm SL); B: P. 

 erythrogaster (KU 5773; 51.5 mm SL); C: P. phoxinus (CNUC uncat, 76.0 mm TL); D: P. oreas 

 (KU 3259, 55.0 mm SL); E: P. phoxinus (KU 22856, 58.0 mm SL); F: P. tennesseensis (UT 44.5274, 

 50.0 mm SL). Scale bars = 1 mm. 



ties are present, including anterolateral, anteromedial, and posterior ones. The anterolateral 

 and anteromedial concavities are separated by a ridge. The posterior concavity is trian- 

 gular-shaped and separated by a ridge from the anterolateral and anteromedial concavi- 

 ties. 



Supraorbital (Fig.40D-F). In cyprinids, this paired bone is flat plate-shaped with va- 

 riation in size from broad and short (e.g., Ctenopharyngodon and Hypophthalmichthys - 

 Howes 1981) to slender and elongated (e.g., Genghis mongolicus - Howes 1984). The su- 



