Carcharhinus cf. sorrah ( Valenciennes, 1839 )

Hovestadt, Dirk C. & Da Silva, Carlos M., 2025, A new chondrichthyan (Sharks and Rays) Fossil Assemblage from the Miocene Cacela Fm. at Albufeira (Algarve, Portugal) with two new species: Palaeoecology and Biogeography, Zootaxa 5724 (1), pp. 1-66 : 25-26

Carcharhinus cf. sorrah ( Valenciennes, 1839)

Plate 5, Figs 1 –10

cf. * Carcharias ( Prionodon) sorrah Valenciennes , in Müller & Henle, 1939: 45, pl. 16.

Material. 49 isolated teeth. NHMW 2025 /0177/0004 ( 10 specimens) .

Description. The upper teeth ( Pl. 5, figs 1–4) possess a principal cusp that is inclined distally and constricted near the base at positions further advanced toward the commissure. The root is divided into two root lobes by a shallow median groove that has a horizontal base.

Discussion. The lower teeth ( Pl. 5, figs 5–10) show similarity with those of C. priscus but are significantly smaller and their principal cusp is higher and narrower. The dentition of the present-day specimens of Carcharhinus sorrah ( Valenciennes, 1839) was illustrated by Bass et al (1973) that is used to identify the fossil remains.

Distribution. In the present day, Carcharhinus sorrah lives in shallow epipelagic waters to depths of at least 70 m. It occurs in the in the Indo West Pacific: South Africa to China and Solomon Islands ( Ebert et al. 2016).

Distribution in Portugal. Upper Miocene: (Tortonian) Algarve Basin, Cacela Fm. (this paper).

Genus Negaprion Whitley, 1940

Type species. Carcharias fronto Jordan & Gilbert , 1882

Figures

FIGURE 1. Location of thestudy site, Leixão dosAlhos,Oura region,Albufeira municipality,southern Portugal, thegeographical coordinates: 37° 4'58.60"N, 8°14'0.39"W. H—Location of the Auramar Beach Resort Hotel.