Rhynchoconger, Jordan & Hubbs, 1925

Ebersole, Jun A., Cicimurri, David J. & Stringer, Gary L., 2019, Taxonomy and biostratigraphy of the elasmobranchs and bony fishes (Chondrichthyes and Osteichthyes) of the lower-to-middle Eocene (Ypresian to Bartonian) Claiborne Group in Alabama, USA, inclu, European Journal of Taxonomy 585, pp. 1-274: 192

publication ID

https://doi.org/10.5852/ejt.2019.585

publication LSID

lsid:zoobank.org:pub:181B6FBA-ED75-4BB4-84C4-FB512B794749

DOI

http://doi.org/10.5281/zenodo.3664369

persistent identifier

http://treatment.plazi.org/id/18174D41-FF3A-FF10-FD63-9D934F26091A

treatment provided by

Plazi

scientific name

Rhynchoconger
status

 

Rhynchoconger  sp.

Fig. 69View Fig M–N

Hildebrandia  sp. – Stringer 1992: 36, fig. 2a. — Müller 1999: 80, pl. 20, figs 28–30.

Rhynchoconger  sp. – Nolf & Stringer 2003: 4, pl. 1, figs 12a–b.

Material examined

UNITED STATES OF AMERICA – Alabama • 1 otolith; MSC 37059.6  .

Description

Sagitta with elliptical outline; somewhat elongate with a height/length ratio of 48%. Shape noticeably angular, with greatest height slightly anterior to mid-point on dorsal margin. Margins smooth. Anterior tapered but with rounded shape. Posterior also tapered but more pointed. Inner face slightly convex, with distinct undivided sulcus. Sulcus slants slightly in posteroventral direction, covers approximately 60% of inner face. Width of sulcus fairly consistent. Small ostial channel connects ostial portion of sulcus to anterodorsal margin. Ostial channel situated away from anterior margin of sulcus. Well-defined rectangular depressed area above sulcus. No indication of ventral furrow. Outer face slightly convex.

Remarks

Only one specimen, an ablated juvenile sagitta, was attributed to Rhynchoconger  . However, features of the sulcus and the presence of a depressed area above the cauda are indicative of Rhynchoconger  . Unfortunately, specific determination was not possible.

Stratigraphic and geographic range in Alabama

The one specimen of Rhynchoconger  sp. was recovered from the “upper” Lisbon Formation at site ACh- 7. Bartonian, zones NP16 and NP17.

Kingdom

Animalia

Phylum

Chordata

Class

Actinopterygii

Order

Anguilliformes

Family

Congridae

Loc

Rhynchoconger

Ebersole, Jun A., Cicimurri, David J. & Stringer, Gary L. 2019
2019
Loc

Hildebrandia

Muller A. 1999: 80
Stringer G. L. 1992: 36
Loc

Rhynchoconger

Nolf D. & Stringer G. 2003: 4