Carcharhinus dicelmai

Collareta, Kindlimann, Baglioni, Landini, Sarti, Altamirano, Urbina & Bianucci, 2022


Classification: Elasmobranchii Carcharhiniformes Carcharhinidae

Reference of the original description
Collareta, A. & Kindlimann, R. & Baglioni, A. & Landini, W. & Sarti, G. & Altamirano, A. & Urbina, M. & Bianucci, G. (2022)
Dental Morphology, Palaeoecology and Palaeobiogeographic Significance of a New Species of Requiem Shark (Genus Carcharhinus) from the Lower Miocene of Peru (East Pisco Basin, Chilcatay Formation). Journal of Marine Science and Engineering, 10(10), Article 1466

Types
Carcharhinus dicelmai
Holotype: MUSM.: 4697;

Images of types

Description:


Citation: Carcharhinus dicelmai Collareta, Kindlimann, Baglioni, Landini, Sarti, Altamirano, Urbina & Bianucci, 2022: In: Database of fossil elasmobranch teeth www.shark-references.com, World Wide Web electronic publication, Version 03/2024

Please send your images of "Carcharhinus dicelmai" to info@shark-references.com

Carcharhinus dicelmai Collareta, Kindlimann, Baglioni, Landini, Sarti, Altamirano, Urbina & Bianucci, 2022, MUSM 4697 (holotype), left upper lateral tooth from the Lower Miocene (Burdigalian) of Zamaca (East Pisco Basin, Peru) © the authors

Description
Original diagnose after Collareta et al. (2022) [31134]: Carcharhinus dicelmai sp. nov. differs from all other extant and extinct species of Carcharhinus as its upper teeth display the following unique combination of characters: crown provided with a triangular, narrow-based, slender, smooth-edged cusp; cusp labiolingually thick at base, semicylindrical, sigmoidal, exhibiting a marked coronal twist that causes the labial face to be partially visible in apical view; cusp apex bending towards the commissure in lateral teeth; mesial and distal heels much thinner labiolingually than the cusp, the latter being separated from the distal heel by a clear notch; distal heel featuring one to five, coarse, angularly lobate serrae that become more prominent toward the base of the cusp; similar serrae often present on the mesial heel too.

Remarks
shark-references Species-ID=16364;
valid after Collareta et al. (2022) [31134]


References
Höltke, O. & Maxwell, E.E. & Rasser, M.W. (2024)
A Review of the Paleobiology of Some Neogene Sharks and the Fossil Records of Extant Shark Species. Diversity, 16(3), Article 147
DOI: 10.3390/d16030147
Collareta, A. & Kindlimann, R. & Baglioni, A. & Landini, W. & Sarti, G. & Altamirano, A. & Urbina, M. & Bianucci, G. (2022)
Dental Morphology, Palaeoecology and Palaeobiogeographic Significance of a New Species of Requiem Shark (Genus Carcharhinus) from the Lower Miocene of Peru (East Pisco Basin, Chilcatay Formation). Journal of Marine Science and Engineering, 10(10), Article 1466