Preophidion petropolis (Dante & Frizzell, 1965 )

Lin, Chien-Hsiang & Nolf, Dirk, 2022, Middle and late Eocene fish otoliths from the eastern and southern USA, European Journal of Taxonomy 814, pp. 1-122 : 60

Preophidion petropolis (Dante & Frizzell, 1965)

Fig. 19G–J

Preophidion petropolis Dante & Frizzell in Frizzell & Dante, 1965: 713, pl. 86 figs 34, 39.

Preophidion petropolis – Schwarzhans 1981b: 80.

“ genus aff. Sirembo ” petropolis – Nolf 1980: 137; 1985: 66.

“aff. Sirembo ” petropolis – Nolf 2013: 66, pl. 128.

Remarks

The otoliths of P. petropolis are easily distinguished from those of P. elevatus and P. granus by their cauda, which is almost straight and is nearly the same length as the ostium.

Stratigraphic and geographic distribution

Lutetian: Weches Formation and “Stone City beds”, Texas. Bartonian: Cook Mountain Formation, Texas and Mississippi; Moodys Branch Formation, Louisiana; “upper” Lisbon Formation, Alabama.

Figures

Fig. 19. Fish otoliths from the US middle and upper Eocene. A–C. Preophidion elevatus (Koken, 1888). A–B. “upper” Lisbon F., Coffeeville Landing, Alabama (IRSNB P 10074–10075). C. Potterchitto M., Newton, NE exit off Interstate 20, Mississippi (IRSNB P 10076).D–F. Preophidion granus Müller, 1999. D–E. Moodys Branch F., Jackson, Riverside Park, Mississippi (IRSNB P 10077–10078). F. Shubuta Clay M., Cynthia, Mississippi Lite clay pit, Mississippi (IRSNB P 10079). G–J. Preophidion petropolis (Dante & Frizzell, 1965). G. Potterchitto M., Newton, NE exit off Interstate 20, Mississippi (IRSNB P 10080). H–J. “Stone City beds”, Stone City Bluff, Brazos River, sample 2 from bed P, Texas (IRSNB P 10081–10083). 1 = ventral view; 2 = inner view. Scale bars = 1 mm.