Carcharhinus dicelmai
Collareta, Kindlimann, Baglioni, Landini, Sarti, Altamirano, Urbina & Bianucci, 2022
Classification: Elasmobranchii Carcharhiniformes Carcharhinidae
Reference of the original description
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
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
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 12/2024
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
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.
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.
Image gallery
References
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
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
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
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
