Paraconger brazosensis (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 : 34-35

Paraconger brazosensis (Dante & Frizzell, 1965)

Fig. 11G–L

Parabatmya brazosensis Dante & Frizzell in Frizzell & Dante, 1965: 698, pl. 86 figs 5–6, 11–13.

“genus aff. Paraconger ” brazosensis – Nolf 1985: 43.

“aff. Paraconger ” brazosensis – Nolf 2013: 36, pl. 23.

Remarks

Otoliths of Paraconger brazosensis are very similar to those of Paraconger sector (see below). The essential differences are that those of the former are more massive and compact without many extensions of their posterior end, less angled ventrally, and most importantly, their sulcus is wider. The constriction in the posterior part of the crista inferior is less pronounced.

Stratigraphic and geographic distribution

Lutetian: Weches Formation and “Stone City beds”, Texas; Dobys Bluff Tongue of Kosciusko Formation, Mississippi. Bartonian: Cook Mountain Formation, Texas.

Figures

Fig. 11. Fish otoliths from the US middle and upper Eocene. A–D. Ariosoma nonsector Nolf & Stringer, 2003. A–C. Wheelock M., Little Brazos River, Stenzel loc., Texas (IRSNB P 9993–9995).D. “Stone City beds”, Stone City Bluff, Brazos River, sample 5 from bed S, Texas (IRSNB P 9996). E–F. Paraconger wechesensis sp. nov., Weches F., Wall Farm 1, Texas. E. Holotype (IRSNB P 9997). F. Paratype (IRSNB P 9998). G–L. Paraconger brazosensis (Dante & Frizzell, 1965), “Stone City beds”, Stone City Bluff, Brazos River, sample 2 from bed P, Texas (IRSNB P 9999–10004). 1 = ventral view; 2 = inner view. Scale bars = 1 mm.