Preophidion elevatus ( Koken, 1888 )

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 : 58

Preophidion elevatus ( Koken, 1888)

Fig. 19A–C

Otolithus (Gadidarum) elevatus Koken, 1888: 290 , pl. 18 figs 4–5.

“genus Sirembinorum ” crassus Müller, 1999: 120, fig. 28/3–18, pl. 16 figs 13–14 (erroneously mentioned as valid in Nolf 2013: 175, but not in his list of valid Sirembini on p. 66).

“ genus aff. Sirembo ” elevatus – Nolf 1980: 110, pl. 17 fig. 5; 1985: 66; 2003: 5, pl. 1 fig. 6.

Joenelsenia elevatus – Schwarzhans 1981b: 112 (Joenielsenia is a synonym of Preophidium).

“aff. Sirembo ” elevatus – Nolf 2013: 66, pl. 127.

Remarks

The otoliths of P. elevatus are very similar to those of P. granus , but the anterior portion of their cauda is shorter and broader, and their outline is less elongated.

Stratigraphic and geographic distribution

Lutetian: “lower” Lisbon Formation, Alabama; Piney Point Formation, Virginia. Bartonian: Cook Mountain Formation, Mississippi; “upper” Lisbon Formation and Gosport Sand, 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.