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Ecological evolution of early Cetartiodactyla and reconstruction of its missing initial link

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Abstract

The analysis of biodiversity and ecological evolution of Eocene Cetartiodactyla against the background of changes in the biosphere, biota, and paleogeography has provided a model for the origin, development, and dispersal of this group. The main trends in ecogenesis, occurrence data, relationships between the main evolutionary events and great abiotic and biotic events are considered and the possibility of Cretaceous origin of Cetartiodactyla is corroborated. Cetartiodactyla could have arise in the Late Cretaceous in Asia south of 30°–40° N or in the southern Indochina Peninsula; they diverged very early into Cetacea and Artiodactyla. The model proposed confirms monophyly of Cetartiodactyla, Artiodactyla, and Cetacea. The existence of a missing initial link explains considerable changes in the Archaeoceti structure (in particular, dentition), as compared to that of Artiodactyla. Eocene Artiodactyla were closer in ecology to the initial type of Cretaceous Eutheria.

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  1. Borissiak Paleontological Institute, Russian Academy of Sciences, Profsoyuznaya ul. 123, Moscow, 117997, Russia

    I. A. Vislobokova

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  1. I. A. Vislobokova
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Correspondence to I. A. Vislobokova.

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Original Russian Text © I.A. Vislobokova, 2013, published in Paleontologicheskii Zhurnal, 2013, No. 5, pp. 72–88.

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Vislobokova, I.A. Ecological evolution of early Cetartiodactyla and reconstruction of its missing initial link. Paleontol. J. 47, 533–548 (2013). https://doi.org/10.1134/S0031030113050122

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  • DOI: https://doi.org/10.1134/S0031030113050122

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