Scomberomorus bleekeri ( Storms, 1892 ),

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: 175-176

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.3664322

persistent identifier

http://treatment.plazi.org/id/18174D41-FF2B-FF00-FDEE-9CB14E820D87

treatment provided by

Plazi

scientific name

Scomberomorus bleekeri ( Storms, 1892 )
status

 

Scomberomorus bleekeri ( Storms, 1892) 

Fig. 64View Fig J–R

Cybium (Enchodus) bleekeri Storms, 1892: 3  , pl. 1.

Sphyraena  sp. – Thurmond & Jones 1981: fig. 103, right.

Scomberomorus bleekeri – Bannikov 1982: 135  .

Scomberomorus cf. stormsi – Clayton et al. 2013  : fig. 6d.

Scomberomorus  sp. – Maisch et al. 2016: 9, fig. 2, 27–33.

Material examined

UNITED STATES OF AMERICA – Alabama • 150 isolated teeth; Claiborne Group ; ALMNH PV1985.87.4, ALMNH PV1985.87.5, ALMNH PV1992.28.33 (4 specimens), ALMNH PV1993.2.496a (2 specimens), ALMNH PV 2005.6View Materials.436.2, MMNS VP-8234 (12 specimens), MSC 34670View Materials, MSC 35777.1 5, MSC 37194.1.1–12, MSC 37194.3.1–17, MSC 37292, MSC 37368, MSC 37662.1 3, MSC 37894View Materials, MSC 38431.1 2, MSC 38540, MSC 38979, NJSM 24044View Materials, NJSM 24323View Materials, NJSM 24324View Materials, SC 2012.47.95, SC 2012.47.96 (26 specimens), WSU 24View Materials, WSU 5053View Materials (43 specimens), WSU CC 546View Materials (2 specimens)  .

Description

Teeth measuring less than 6.0 mm high, 4.0 mm wide. Crown medially curved, biconvex; medial face more convex than lateral face; faces with thin layer of smooth enameloid. Crown bicarinate; carinae smooth, sharp, convex, not reaching tooth base. Tooth base thickened medially, D-shaped in basal view.

Remarks

We identified two Scomberomorus  species in our Claiborne sample, S. bleekeri ( Storms, 1892)  and S. stormsi ( Leriche, 1905)  . The teeth of S. stormsi  (see below) differ by being more elongated and gracile compared to S. bleekeri  ( Kemp et al. 1990; Weems 1999), they occasionally bear longitudinal striations on their labial and lingual faces ( Casier 1946) and are more ovate in basal outline.

The teeth of Scomberomorus bleekeri  differ from those of Palaeocybium  in being asymmetrical in basal view (the carinae divide the crown into a thinner, weakly convex labial face and thicker, very convex lingual face), and by appearing slightly constricted basally due to the carinae stopping short of the tooth base. We consider the Scomberomorus  material discussed by Clayton et al. (2013) and Maisch et al. (2016) to represent S. bleekeri  . Thurmond & Jones (1981: fig. 47) figured three teeth which they assigned to Sphyraena  sp., but our examination of these teeth revealed that the specimen shown in figure 47 (right) belongs to S. bleekeri  .

Stratigraphic and geographic range in Alabama

The specimens in our sample were collected from the lower Tallahatta Formation at site ADl-1, the Tallahatta Formation at site AMo-8, the contact of the Tallahatta and Lisbon formations at sites ACh-7, ACh-14 and ACov-11, the basal Lisbon Formation at site ACov-11, and the basal Gosport Sand at site ACl-4. Upper Ypresian to middle Bartonian, zones NP14 to NP17.

ALMNH

Alabama Museum of Natural History

Kingdom

Animalia

Phylum

Chordata

Class

Actinopterygii

Order

Perciformes

Family

Scombridae

Genus

Scomberomorus

Loc

Scomberomorus bleekeri ( Storms, 1892 )

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

Cybium (Enchodus) bleekeri

Storms R. 1892: 3
Loc

Scomberomorus bleekeri –

Bannikov A. F. 1982: 135
Loc

Scomberomorus

Maisch H. M. & Becker M. A. & Raines B. W. & Chamberlain J. A. 2016: 9