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Kretzoiarctos gen. nov., the oldest member of the giant panda clade
Abella, Juan (Museo Nacional de Ciencias Naturales (CSIC))
Alba, David M. (Institut Català de Paleontologia Miquel Crusafont)
Robles Giménez, Josep Maria (Institut Català de Paleontologia Miquel Crusafont)
Valenciano, Alberto (Universidad Complutense de Madrid. Departamento de Paleontología)
Rotgers, Cheyenn (Institut Català de Paleontologia Miquel Crusafont)
Carmona, Raül (Institut Català de Paleontologia Miquel Crusafont)
Montoya, Plinio (Universitat de València. Departament de Geologia)
Morales, Jorge (Museo Nacional de Ciencias Naturales (CSIC))

Date: 2012
Abstract: The phylogenetic position of the giant panda, Ailuropoda melanoleuca (Carnivora: Ursidae: Ailuropodinae), has been one of the most hotly debated topics by mammalian biologists and paleontologists during the last century. Based on molecular data, it is currently recognized as a true ursid, sister-taxon of the remaining extant bears, from which it would have diverged by the Early Miocene. However, from a paleobiogeographic and chronological perspective, the origin of the giant panda lineage has remained elusive due to the scarcity of the available Miocene fossil record. Until recently, the genus Ailurarctos from the Late Miocene of China (ca. 8–7 mya) was recognized as the oldest undoubted member of the Ailuropodinae, suggesting that the panda lineage might have originated from an Ursavus ancestor. The role of the purported ailuropodine Agriarctos, from the Miocene of Europe, in the origins of this clade has been generally dismissed due to the paucity of the available material. Here, we describe a new ailuropodine genus, Kretzoiarctos gen. nov. , based on remains from two Middle Miocene (ca. 12–11 Ma) Spanish localities. A cladistic analysis of fossil and extant members of the Ursoidea confirms the inclusion of the new genus into the Ailuropodinae. Moreover, Kretzoiarctos precedes in time the previously-known, Late Miocene members of the giant panda clade from Eurasia (Agriarctos and Ailurarctos). The former can be therefore considered the oldest recorded member of the giant panda lineage, which has significant implications for understanding the origins of this clade from a paleobiogeographic viewpoint.
Note: Número d'acord de subvenció MINECO/CGL2011-28681
Note: Número d'acord de subvenció MINECO/CGL2011-25754
Note: Número d'acord de subvenció MICINN/RYC-2009-04533
Note: Número d'acord de subvenció AGAUR/2009/SGR-754
Rights: Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original. Creative Commons
Language: Anglès.
Document: article ; recerca ; publishedVersion
Published in: Plos One, Vol. 7, Issue 11 (November 2012) , art. e48985, ISSN 1932-6203

DOI: 10.1371/journal.pone.0048985
PMID: 23155439

7 p, 368.3 KB

The record appears in these collections:
Research literature > UAB research groups literature > Research Centres and Groups (scientific output) > Experimental sciences > Institut Català de Paleontologia Miquel Crusafont (ICP)
Articles > Research articles
Articles > Published articles

 Record created 2018-07-24, last modified 2019-03-15

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