Latilus sulcatus, (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 : 80-81

“ Latilus ” sulcatus ( Koken, 1888)

Fig. 29A–D

Otolithus (Cottidarum) sulcatus Koken, 1888: 287 , pl. 18 fig. 12.

“genus Malacanthidarum” sulcatus – Nolf & Stringer 2003: 5, pl. 5 figs 3–8. — Nolf 2003: 6, pl. 1 fig. 14.

“ Malacanthida ” sulcata – Nolf 2013: 98, pl. 238.

Malacanthus ? sulcatus – Ebersole et al. 2019: 208 , fig. 71e–f.

Remarks

Otoliths of “ L.” sulcatus have much in common with those of latilines, but the sulcus is not as deeply incised as that of their Recent relatives, and the excisura is much less incised. The configuration of the sulcus appears to be the most consistent and can be readily recognized. The dorsal rim of the otoliths shows much intra-specific variability.

Stratigraphic and geographic distribution

Bartonian: “upper” Lisbon Formation, Alabama; Moodys Branch Formation, Louisiana, Mississippi and Alabama. Priabonian: Yazoo Clay, Louisiana.

Figures

Fig. 29. Fish otoliths from the US middle and upper Eocene. A–D. “Latilus” sulcatus Koken, 1888. A. Moodys Branch F., Melvin (SE of town), Alabama (IRSNB P 10181). B–D. “Upper” Lisbon F., Barrytown, County Road 21, Alabama (IRSNB P 10182–10184). E. Malacanthidae indet., Weches F., Robbins, road side, Texas (IRSNB P 10185). F–G. Triglidae indet. F. Landrum M., Pin Oak Creek, Texas (IRSNB P 10186). G. “Stone City beds”, Stone City Bluff, Brazos River, Texas (IRSNB P 10187). H–K. “Haemulon” obliquum (Müller, 1999), “Stone City beds”, Stone City Bluff, Brazos River sample 2 from bed P, Texas (IRSNB P 10188–10191). 1 = ventral view; 2 = inner view. Scale bars = 1 mm.