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<datestamp>2018-01-11</datestamp>
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<publisher>HAL CCSD</publisher>
<title lang=en>The early evolutionary history of anomaluroid rodents in Africa: new dental remains of a zegdoumyid (Zegdoumyidae, Anomaluroidea) from the Eocene of Tunisia</title>
<creator>Marivaux, Laurent</creator>
<creator>Essid, El Mabrouk</creator>
<creator>Marzougui, Wissem</creator>
<creator>Ammar, Hayet Khayati</creator>
<creator>Merzeraud, Gilles</creator>
<creator>Tabuce, Rodolphe</creator>
<creator>Vianey-Liaud, Monique</creator>
<contributor>Institut des Sciences de l'Evolution [Montpellier] (ISEM) ; Université de Montpellier (UM) - Institut de recherche pour le développement [IRD] : UR226 - Centre National de la Recherche Scientifique (CNRS)</contributor>
<contributor>Office National des Mines (ONM), Tunis</contributor>
<contributor>Géosciences Montpellier ; Université des Antilles et de la Guyane (UAG) - Institut national des sciences de l'Univers (INSU - CNRS) - Université de Montpellier (UM) - Centre National de la Recherche Scientifique (CNRS)</contributor>
<contributor>Bassins ; Géosciences Montpellier ; Université des Antilles et de la Guyane (UAG) - Institut national des sciences de l'Univers (INSU - CNRS) - Université de Montpellier (UM) - Centre National de la Recherche Scientifique (CNRS) - Université des Antilles et de la Guyane (UAG) - Institut national des sciences de l'Univers (INSU - CNRS) - Université de Montpellier (UM) - Centre National de la Recherche Scientifique (CNRS)</contributor>
<source>ISSN: 0300-3256</source>
<source>EISSN: 1463-6409</source>
<source>Zoologica Scripta</source>
<publisher>Wiley-Blackwell</publisher>
<publisher>Wiley</publisher>
<identifier>hal-01172007</identifier>
<identifier>https://hal.archives-ouvertes.fr/hal-01172007</identifier>
<source>https://hal.archives-ouvertes.fr/hal-01172007</source>
<source>Zoologica Scripta, Wiley, 2015, 44 (2), pp.117-134. 〈10.1111/zsc.12095〉</source>
<identifier>DOI : 10.1111/zsc.12095</identifier>
<relation>info:eu-repo/semantics/altIdentifier/doi/10.1111/zsc.12095</relation>
<language>en</language>
<subject lang=en>Zegdoumyidae</subject>
<subject lang=en>Anomaluroidea</subject>
<subject lang=en>Tunisia</subject>
<subject>[SDU.STU.PG] Sciences of the Universe [physics]/Earth Sciences/Paleontology</subject>
<type>info:eu-repo/semantics/article</type>
<type>Journal articles</type>
<description lang=en>The Late Early-to-Early Middle Eocene Zegdoumyidae are the oldest representatives of the order Rodentia to be known in Africa thus far. Despite the fragmentary nature of their fossil record, these early African rodents have been central in discussions surrounding the early evolutionary history of the Anomaluroidea clade (the living forms of which are the ‘scaly-tailed squirrels’, i.e. Anomaluridae). Here, we describe new dental remains attributable to Zegdoumys sbeitlai, a zegdoumyid from Tunisia (Djebel Chambi, CBI-1) dated at ca 50–45 Ma. The original material referred to this taxon was limited to four teeth documenting few dental loci. The new gathered material comprises practically all dental loci (except P4), thereby allowing a better description and characterization of this taxon. This Tunisian species is clearly distinct from its roughly coeval Algerian counterpart (Z. lavocati) or from the younger species recorded from Namibia (Z. namibiensis). We investigated the phylogenetic positions of Z. sbeitlai and the Zegdoumyidae in a high-level rodent phylogeny with a cladistic assessment of the dental evidence. Our results show that zegdoumyids represent the earliest offshoots (pectinately arranged) of a large clade that also encompasses the more advanced Eocene anomaluroids (here named Nementchamyidae), the Miocene Nonanomaluridae, and the stem and crown Anomaluridae. In this phylogenetic context, the species of Zegdoumys are the basalmost members of this large Anomaluroidea clade. Zegdoumyid taxa are therefore the oldest stem anomaluroid candidates, a statement which strengthens support for the hypothesis of the great antiquity of the Anomaluroidea clade in Africa. From a historical biogeography perspective, this assumption suggests that anomaluroids invaded Asia from Afro-Arabia sometime during the Middle Eocene, a dispersal event which was likely concomitant but opposite to the dispersals envisaged for the hystricognathous rodents and anthropoid primates from Asia to Afro-Arabia.</description>
<date>2015-03</date>
</dc>
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