Research paper
Pre-Messinian ecological diversity of Mediterranean sharks revealed by the study of their dermal denticles
HUMBERTO G. FERRÓN
Cavanilles Institut of Biodiveristy and Evolutionary Biology, C/Catedrático José Beltrán Martínez nº 2, 46980 Paterna, Valencia, Spain. Humberto.Ferron@uv.es
Corresponding author
JOSÉ LUIS HERRÁIZ
Cavanilles Institut of Biodiveristy and Evolutionary Biology, C/Catedrático José Beltrán Martínez nº 2, 46980 Paterna, Valencia, Spain. joheca@alumni.uv.es
HÉCTOR BOTELLA
Cavanilles Institut of Biodiveristy and Evolutionary Biology, C/Catedrático José Beltrán Martínez nº 2, 46980 Paterna, Valencia, Spain. Hector.Botella@uv.es
CARLOS MARTÍNEZ-PÉREZ
Cavanilles Institut of Biodiveristy and Evolutionary Biology, C/Catedrático José Beltrán Martínez nº 2, 46980 Paterna, Valencia, Spain. Carlos.Martinez-Perez@uv.es
School of Earth Sciences, University of Bristol, Life Sciences Building, 24 Tyndall Avenue, BS8 1TQ, Bristol, UK
ABSTRACT
The Messinian salinity crisis (~5.59 Ma) is regarded as one of the most determining events for the recent evolutionary and palaeobiogeographic history of the Mediterranean biota. The impact of such episode has usually been assessed by evaluating the associated taxonomic turnover, however its consequences have rarely been interpreted from an ecological perspective. Here we assess the functional diversity of shark dermal denticles in a Serravallian locality from southeast Spain, providing a primary view into the pre-Messinian ecological diversity of shark communities from the Western Mediterranean. Our results reveal a high diversity of functional types of dermal denticles including dermal denticles that prevent the settlement of ectoparasites and epibionts, abrasion resistant dermal denticles, drag reduction dermal denticles and dermal denticles with less specific, or more generalized, functions. This variety of dermal denticles supports the presence of several ecological groups of sharks such as schooling and strong swimming species and, possibly, demersal species, slow sharks of the open water and, possibly, bioluminescent taxa. Therefore, the application of this methodology to Pliocene and Pleistocene fossiliferous sites will be crucial for unravelling the impact of Messinian salinity crisis and other recent geological events from an ecological perspective, allowing us to understand the shark community composition and diversity of the current Mediterranean Sea.
Key words: Dermal denticles, functional ecology, morphometrics, Serravallian, Western Mediterranean.
How to cite: Ferrón, H.G., Herráiz, J.L., Botella, H. & Martínez-Pérez, C. 2019. Pre-Messinian ecological diversity of Mediterranean sharks revealed by the study of their dermal denticles. Spanish Journal of Palaeontology, 34 (2), 289-298.
Received 12 December 2018, Accepted 28 May 2019, Published 31 December 2019
https://doi.org/10.7203/sjp.34.2.16118
