Accéder directement au contenu Accéder directement à la navigation
Article dans une revue

A new Cainotherioidea (Mammalia, Artiodactyla) from Palembert (Quercy, SW France): Phylogenetic relationships and evolutionary history of the dental pattern of Cainotheriidae

Abstract : Cainotheriidae are small artiodactyls restricted to Western Europe deposits from the late Eocene to the middle Miocene. From their first occurrence in the fossil record, cainotheriids show a highly derived molar morphology compared to other endemic European artiodactyls, called the "Cainotherium plan", and the modalities of the emergence of this family are still poorly understood. Cainotherioid dental material from the Quercy area (Palembert, France; MP18-MP19) is described in this work and referred to Oxacron courtoisii and to a new "cainotherioid" species. The latter shows an intermediate morphology between the "robiacinid" and the "derived cainotheriid" types. This allows for a better understanding of the evolution of the dental pattern of cainotheriids, and identifies the enlargement and lingual migration of the paraconule of the upper molars as a key driver. A phylogenetic analysis, based on dental characters, retrieves the new taxon as the sister group to the clade including Cainotheriinae and Oxacroninae. The new taxon represents the earliest offshoot of Cainotheriidae.
Liste complète des métadonnées

https://hal.archives-ouvertes.fr/hal-03018735
Contributeur : Romain Weppe <>
Soumis le : lundi 23 novembre 2020 - 09:37:16
Dernière modification le : mardi 24 novembre 2020 - 03:28:36

Fichier

Weppe et al._2020_Palembert.pd...
Fichiers produits par l'(les) auteur(s)

Identifiants

Citation

Romain Weppe, Cécile Blondel, Monique Vianey-Liaud, Thierry Pélissié, Maëva Orliac. A new Cainotherioidea (Mammalia, Artiodactyla) from Palembert (Quercy, SW France): Phylogenetic relationships and evolutionary history of the dental pattern of Cainotheriidae. Palaeontologia Electronica, Coquina Press, 2020, ⟨10.26879/1081⟩. ⟨hal-03018735⟩

Partager

Métriques

Consultations de la notice

44

Téléchargements de fichiers

81