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New species, revision, and phylogeny of Ronzotherium Aymard, 1854 (Perissodactyla, Rhinocerotidae)

  • Tissier, Jérémy Route de Fontenais 21, JURASSICA Museum, 2900 Porrentruy, Switzerland & Chemin du musée 4, Université de Fribourg, Department of Geosciences, 1700 Fribourg, Switzerland
  • Antoine, Pierre-Olivier Place Eugène Bataillon, Institut des sciences de l’évolution de Montpellier-CNRS-IRD-RPHE, Université de Montpellier, 34095 Montpellier, France
  • Becker, Damien Route de Fontenais 21, JURASSICA Museum, 2900 Porrentruy, Switzerland & Chemin du musée 4, Université de Fribourg, Department of Geosciences, 1700 Fribourg, Switzerland
    2021
Published in:
  • European Journal of Taxonomy. - 2021, vol. 753, p. 1-80
English Ronzotherium is one of the earliest Rhinocerotidae in Europe, which first appeared just after the Eocene/Oligocene transition (Grande Coupure), and became extinct at the end of the Oligocene. It is a large-sized rhinocerotid, with a special position in the phylogeny of this group, as being one of the earliest-branching true Rhinocerotidae. However, its intra-generic systematics has never been tested through computational phylogenetic methods and it is basically unknown. Its taxonomical history has gone through numerous complications, and thus we aim to provide here a complete revision of this genus, through phylogenetic methods. After a re-examination of all type specimens (five supposed species) as well as of most well-preserved specimens from all over Europe and ranging through the complete Oligocene epoch, we performed a parsimony analysis to test the position of some problematic specimens. According to our results, five species can be distinguished, Ronzotherium velaunum (type species), R. filholi, R. elongatum and R. romani as well as a new species: R. heissigi sp. nov. We also drastically re-interpret its anatomy and show that the ‘short-limbed’ “Diaceratherium” massiliae, described from Southern France, can be considered as a junior synonym of R. romani. Finally, we exclude the Asian species “Ronzotherium” orientale and “Ronzotherium” brevirostre from Ronzotherium and we consider R. kochi as a junior synonym of R. filholi.
Faculty
Faculté des sciences et de médecine
Department
Département de Géosciences
Language
  • English
Classification
Paleontology
License
License undefined
Identifiers
Persistent URL
https://folia.unifr.ch/unifr/documents/309416
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