Albula oweni ( Owen, 1845 ),

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: 163

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.3664312

persistent identifier

http://treatment.plazi.org/id/18174D41-FF27-FF0D-FDB2-9C594C4C08DC

treatment provided by

Plazi

scientific name

Albula oweni ( Owen, 1845 )
status

 

Albula oweni ( Owen, 1845) 

Fig. 60View Fig J–R

Pisodus oweni Owen, 1845: 138  , atlas p. 13, pl. 47, fig. 3.

Albula oweni – Woodward 1901: 108  , pl. 3, figs 3–5.

Material examined

UNITED STATES OF AMERICA – Alabama • 25 isolated teeth; Claiborne Group ; ALMNH PV1993.2.494 (2 specimens), MSC 35775.1 14, MSC 37166.1 2, MSC 37442, MSC 37699, MSC 37891, MSC 38430, MSC 38445.1, MSC 38491, MSC 38862  .

Description

Tooth crown with circular outline in occlusal view; occlusal surface nearly flat to convex. Thin enameloid covering smooth, generally not reaching tooth base; flattened triturating surface of worn teeth composed of dentine. Sides of crown straight or slightly convex, often tapered basally. Tooth base flat with circular, centrally located pulp cavity.

Remarks

The A. eppsi  teeth in our sample measure less than 5 mm in diameter, whereas teeth of A. oweni  measure up to 9 mm in diameter. Small teeth with straight or weakly biconvex lateral sides were originally described as A. eppsi  by White (1931: figs 137–141). In contrast, teeth of A. oweni  grow to large sizes and have lateral tooth sides that taper basally. The teeth of both A. eppsi  and A. oweni  are separable from Pycnodus  sp. in having a much higher crown covered by only a thin enameloid layer, a small but conspicuous pulp cavity, and worn teeth are not punctate.

Stratigraphic and geographic range in Alabama

The specimens in our sample were collected from the lower Tallahatta Formation at site ADl-1, the contact of the Tallahatta and Lisbon formations at site ACov-11, the “upper” Lisbon Formation at site ACl-3, 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

Albuliformes

Family

Albulidae

Genus

Albula

Loc

Albula oweni ( Owen, 1845 )

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

Pisodus oweni

Owen R. 1845: 138
Loc

Albula oweni – Woodward 1901: 108

Woodward A. S. 1901: 108