gen. indet. sp. indet., Rafinesque, 1810,

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: 180

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.3664353

persistent identifier

http://treatment.plazi.org/id/18174D41-FF36-FF1C-FD75-9D0B4FDE09AF

treatment provided by

Plazi

scientific name

gen. indet. sp. indet.
status

 

Gen. et sp  . indet.

Fig. 66View Fig M–U

Ostracion  sp. – White 1956: 146.

Ostracion meretrix – Case 1981: 2  , fig. 22.

Ostracion  sp. – Thurmond & Jones 1981: 108.

Material examined

UNITED STATES OF AMERICA – Alabama • 12 isolated teeth; Claiborne Group; MMNS VP-8194, MSC 2401, MSC 35771.1–3, MSC 37121View Materials, MSC 37136View Materials, MSC 37418View Materials, NJSM 24046, NJSM 24327, WSU 28, WSU 5005.

Description

Dermal plates generally polygonal, thickest at center but laterally tapered. Outer surface convex, ornamented with concentric pattern of isolated enameloid-covered tubercles surrounding central node. Internal surface smooth, concave.

Remarks

In North America, fossil dermal plates like those described above have been assigned to Ostracion Rafinesque, 1815  (see Leriche 1942; White 1956; Stringer 2001). However, as discussed by Winterbottom & Tyler (1983), Tyler & Gregorova (1991), and Weems (1998, 1999), there is a tremendous amount of inter- and intraspecific variation within the dermal armor of ostraciid fish, and even on the body of a single individual. Weems (1998) explained that specimens like those described herein can be assigned to the Ostraciidae  because those of Aracanidae  , the only other family of boxfishes, are ornamented with a central spine from which radiating lines of tubercles emanate.

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 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. Upper Ypresian to middle Bartonian, zones NP14 to NP17.

NJSM

New Jersey State Museum

WSU

Weber State University, Bird and Mammal Collection

Kingdom

Animalia

Phylum

Chordata

Class

Actinopterygii

Order

Tetraodontiformes

Family

Ostraciidae

Genus

gen. indet.

Loc

gen. indet. sp. indet.

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

Ostracion

White E. I. 1956: 146
Loc

Ostracion meretrix –

Case G. R. 1981: 2
Loc

Ostracion

Thurmond J. T. & Jones D. E. 1981: 108