Enamel microstructure defines a major Paleogene hippopotamoid clade: the Merycopotamini (Cetartiodactyla, Hippopotamoidea)

Abstract : We present new material of the selenodont anthracothere Hemimeryx blanfordi from the Oligocene deposits of the Bugti Hills (Balochistan, Pakistan), collected between 1999 and 2002. This is the first undisputed Oligocene occurrence of the species, previously known from the early Miocene of Pakistan. Investigation of the molar enamel microstructure reveals a surprising mono-zonal Schmelzmuster, already detected in some middle to Late miocene selenedont anthracotheres. We include this observation combined with a morphological revision of H. blanfordi and a cladistic assessment of the dental evidence, to propose a new phylogenetic hypothesis regarding Hemimeryx and its close relatives. We confirm the clade including advanced bothriodontines, which we erect to a tribe rank and name Merycopotamini. The South Asian origin of Merycopotamini is consistent with hypothesized subsequent dispersal events of Merycopotamini from Asia to Africa.
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Article dans une revue
Historical Biology, Taylor & Francis, 2016, 29 (7), pp.947 - 957. 〈10.1080/08912963.2016.1274748〉
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https://hal.umontpellier.fr/hal-01813199
Contributeur : Laurent Marivaux <>
Soumis le : mardi 12 juin 2018 - 10:20:45
Dernière modification le : jeudi 14 juin 2018 - 01:16:20

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Fabrice Lihoreau, Léanie Alloing-Séguier, Pierre-Olivier Antoine, Jean-Renaud Boisserie, Laurent Marivaux, et al.. Enamel microstructure defines a major Paleogene hippopotamoid clade: the Merycopotamini (Cetartiodactyla, Hippopotamoidea). Historical Biology, Taylor & Francis, 2016, 29 (7), pp.947 - 957. 〈10.1080/08912963.2016.1274748〉. 〈hal-01813199〉

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