Raja primarmata

Woodward, 1889


Classification: Elasmobranchii Rajiformes Rajidae

Reference of the original description
Woodward, A.S. (1889)
Catalogue of the fossil fishes in the British Museum. Part. I. British Museum(Natural History): 474 p., fig., 17 pl.

Types
Raja primarmata
Syntype: NHMUK: PV P 4015; NHMUK: PV P 4016; NHMUK: PV P 49517;

Images of types

Description:


Citation: Raja primarmata Woodward, 1889: In: Database of fossil elasmobranch teeth www.shark-references.com, World Wide Web electronic publication, Version 12/2021

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Raja primarmata sp. nov. ;portion of disk, U. Senonian; Sahel Alma, Mt. Lebanon, pct. Pectoral fin. plv. Pelvic fin. pr.r. Preaxial ray of pelvic tin. [P. 4015.]; 2. Ditto ; portion of disk, two thirds nat. size. Ibid. ms.p. Pectoral mesopterygium. pct. Pectoral fin-rays. pr.p. Pectoral propterygium. [P. 4016]; 3. Ditto; dermal tubercle of no. P. 4015, upper and lateral aspects, about four times nat. size.

Description
Original description of Woodward, 1889 [2593]
Type. Specimens figured in PI. IV, figs. 1-3. Snout probably acute. Angle of pectoral fin acute. A series of largo oval conical tuber-cles, radiately grooved, is arranged along the middle of the back and tail; and two regular series of similar smaller tubercles are placed on either side of the median line.
Form. & Loc, Upper Cretaceous (Turonian): Sahel Alma, Syria.
P. 4015-6, 49517. Type speci-mens figured in PI. IV. figs. 1-3. The second is preserved in counterpart. The first of these fossils consists of the much-crushed middle portion of the disk and anterior extremity of the tail. The caudal region is slender at its commencement, and a portion of one of the pelvic fins is preserved, displaying the thickened preaxial ray. The body is covered with fine shagreen; and larger tubercles, viewed from below or only seen as impressions, have the characters and disposition already noted in the specific description. The second fossil exhibits the com-plete anterior half of one of the pectoral fins, extending to the snout, in addition to portions of the skull, branchial arches, vertebral column, and pectoral arch. The pectoral fin is very broad, but rapidly tapers anteriorly. The region in advance of the pectoral arch is elongated, and is suggestive of an acute snout. The teeth are rounded and minute. The hinder portion of the fossil is much crushed, and only a few of the dermal tubercles are shown, scattered and displaced.

Remarks
type species of Britobatos Claeson et al., 2013 p. 1027 [19627] by original designation (Art. 68.2 ICZN);

synonym of Rhinobatos primarmatus after Cappetta (1980) p. 190 [327];

synonym of Britobatos primarmata after Claeson et al. (2013) p. 1027 [19627];

References
Woodward, A.S. (1889)
Catalogue of the fossil fishes in the British Museum. Part. I. British Museum(Natural History): 474 p., fig., 17 pl.