Trichiurides sagittidens Winkler, 1874,

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: 170-172

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.3664326

persistent identifier

http://treatment.plazi.org/id/18174D41-FF2C-FF04-FDF2-9CEF4E570EF3

treatment provided by

Plazi

scientific name

Trichiurides sagittidens Winkler, 1874
status

 

Trichiurides sagittidens Winkler, 1874 

Fig. 63View Fig A–I

Trichiurides sagittidens Winkler, 1874b: 31  , pl. 2, figs 22–23.

Trichiurus  sp. – Thurmond & Jones 1981: 105, fig. 49.

Trichiurides cf. sagittidens – Clayton et al. 2013  : fig. 6e.

Triciurides cf. T. sagittidens – Maisch et al. 2016  : fig. 2, 17–18.

Material examined

UNITED STATES OF AMERICA – Alabama • 33 isolated teeth; Claiborne Group ; ALMNH PV 1989.4.12 (2 specimens), ALMNH PV1989.4.73.2 (4 specimens), ALMNH PV1989.4.102, ALMNH PV1989.4.129, ALMNH PV1989.4.142, ALMNH PV1989.4.151.3, ALMNH PV1993.2.500 (5 specimens), ALMNH PV2005.6.432, ALMNH PV2005.6.433, MMNS VP-8195, MSC 12800View Materials, MSC 2159, MSC 2405.1 2, MSC 37356, MSC 37364, MSC 37486, MSC 37520, MSC 38517, MSC 38538, NJSM 24043View Materials, WSU 13View Materials, WSU 27View Materials, WSU CC 547View Materials (2 specimens)  .

Description

Teeth tall, rather narrow, laterally compressed apically, conical basally. Crown sharply curved distally except for anteriorly directed apical portion. Crown apex with sharp anterior carina; large posterior barb composed of translucent enamel. Tooth base with circular outline; shallow, centrally located pulp cavity.

Remarks

An elongated, distally curved tooth with a laterally compressed apex bearing a large posterior apical barb, and circular basal outline distinguish Trichiurides sagittidens  from teeth of Sphyraena  and Trichiurus  . Trichiurides sagittidens  teeth lack lateral carinae as seen on Eutrichiurides plicidens  comb. nov. teeth. The Claiborne specimens in our sample appear to be conspecific with those described and figured by Winkler (1874b: 31, pl. 2, figs 22–23) as Trichiurides sagittidens  . Trichiurides  is monospecific and presently only known from laniary teeth. Thurmond & Jones (1981: 105, fig. 49) described and figured a tooth from the Tallahatta Formation in Monroe County, AL as Trichiurus  sp., but a reexamination of this specimen showed it instead belongs to Trichiurides sagittidens  .

Stratigraphic and geographic range in Alabama

The specimens in our sample were collected from the Tallahatta Formation at site AMo-8, the contact of the Tallahatta and Lisbon formations at sites ACh-14 and ACov-11, the basal Lisbon Formation at site ACov-11, the basal Gosport Sand at site ACl-4, and the Gosport Sand at site ACh-21 and ACl-15. Lower Lutetian to middle Bartonian, zones NP14 to NP17.

ALMNH

Alabama Museum of Natural History

Kingdom

Animalia

Phylum

Chordata

Class

Actinopterygii

Order

Perciformes

Family

Trichiuridae

Genus

Trichiurides

Loc

Trichiurides sagittidens Winkler, 1874

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

Trichiurides sagittidens

Winkler T. C. 1874: 31
Loc

Trichiurus

Thurmond J. T. & Jones D. E. 1981: 105