Insular aurochs (Mammalia, Bovidae) from the Pleistocene of Kythera Island, Greece
Siarabi, Souzanna (Institut Català de Paleontologia Miquel Crusafont)
Kostopoulos, Dimitris S. (Aristotle University of Thessaloniki. School of Geology)
Bartsiokas, Antonis (Democritus University of Thrace. Department of History and Ethnology)
Rozzi, Roberto (Martin-Luther-Universität Halle-Wittenberg. Zentralmagazin Naturwissenschaftlicher Sammlungen)

Data:	2023
Resum:	Islands are renowned for their remarkable biotas and have been widely recognised as natural laboratories for the study of evolution, speciation, and extinction. Large mammals in insular environments typically evolve to dwarfs and small ones to giants, a trend known as the island rule. Despite their dominance in the continental European mammal faunas of Middle-Late Pleistocene, Bison and Bos are usually lacking from the neighbouring endemic insular assemblages. Here, we report the first insular bovin from the Late Pleistocene of Kythera Island, Greece and we carry out a detailed morphometrical analysis with emphasis on its adaptations and palaeogeographic implications. Based on both dental and postcranial qualitative and quantitative comparisons, we attribute the studied material from Kythera to Bos primigenius. Significant differences from both its continental Pleistocene relative and the endemic bovins from Mediterranean islands, allow us to recognize it as a new subspecies, Bos primigenius thrinacius n. ssp. , the third known insular dwarf of this taxon in Europe. Our main hypothesis is that the gradual disconnection of Kythera Island from the neighbouring Peloponnese peninsula just after MIS 6 (late Middle Pleistocene, ∼180 ka) resulted in the isolation of a mainland Bos primigenius population in the rocky and predator free environment of palaeo-Kythera Island. Under these particular conditions the population underwent some remarkable changes and gained some peculiar features, especially on metapodials. The timing and reasons of Bos primigenius thrinacius extinction remain unknown.
Drets:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial i la comunicació pública de l'obra, sempre que no sigui amb finalitats comercials, i sempre que es reconegui l'autoria de l'obra original. No es permet la creació d'obres derivades.
Llengua:	Anglès
Document:	Article ; recerca ; Versió acceptada per publicar
Matèria:	Bovinae ; Pleistocene ; Island evolution ; Dwarfism ; Body size ; Europe ; Quaternary
Publicat a:	Quaternary science reviews, Vol. 319 (Nov. 2023) , art. 108342, ISSN 1873-457X

DOI: 10.1016/j.quascirev.2023.108342

Disponible a partir de: 2025-11-30 Article. Postprint

Disponible a partir de: 2025-11-30 Material suplementari. Postprint

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