Phylogeny and evolutionary history of hystricognathous rodents from the Old World during the Tertiary: new insights into the emergence of modern “phiomorph” families

Barbière, Franck; Marivaux, Laurent

doi:10.1017/cbo9781107360150.005

Cited by 19 publications

(14 citation statements)

References 61 publications

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“…On the basis of dental remains, five taxa were described from this locality, three were new to science: Cachiyacuy contamanensis Antoine et al, 2012, Cachiyacuy kummeli Antoine et al, 2012, and Canaanimys maquiensis Antoine et al, 2012. These taxa are particularly interesting because they display a suite of primitive dental characters (for caviomorphs), which are otherwise found only in coeval African phiomorphs (Antoine et al, 2012;Barbière and Marivaux, 2015). This striking morphological affinity strengthens support for the hypothesis of the African origin of the caviomorph clade.…”

Section: Introductionsupporting

confidence: 53%

“…All these features, together with the pentalophodonty of M1-2s observed in most of taxa, are also found in the earliest Afro-Asian hystricognaths ("phiomyids" and "baluchimyines"; Antoine et al, 2012). As the result of their close morphological and phylogenetic proximity with some Afro-Asian "phiomorphs" (Antoine et al, 2012;Marivaux et al, 2014;Barbière and Marivaux, 2015), Cachiyacuy and Canaanimys are considered as stem Caviomorpha (Antoine et al, 2012). Other taxa mentioned in this study, the cavioid Eobranisamys, the octodontoid Eoespina, and the caviomorph incertae sedis Pozomys, display a combination of characters, which appear somewhat more derived, such as: no connection of the metaloph with the third transverse crest or the anterior arm of the hypocone, taeniodont upper teeth (in Eobranisamys and at least in M2s of Pozomys), a reduction of crests on P4 (in Eobranisamys), a reduction or even the absence of the metaloph and metacone on upper molars (notably in Eoespina and Pozomys), and pseudo-taeniodont lower molars (in Pozomys).…”

Section: Discussion Eocene Localities Of Contamana: a Homogeneous Setmentioning

confidence: 82%

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Late middle Eocene caviomorph rodents from Contamana, Peruvian Amazonia

Boivin¹,

Marivaux²,

Orliac³

et al. 2017

Palaeontologia Electronica

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Section: Introductionsupporting

confidence: 53%

Section: Discussion Eocene Localities Of Contamana: a Homogeneous Setmentioning

confidence: 82%

Late middle Eocene caviomorph rodents from Contamana, Peruvian Amazonia

Boivin¹,

Marivaux²,

Orliac³

et al. 2017

Palaeontologia Electronica

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“…, , ; Sallam et al . , ; Barbière & Marivaux ) and anthropoid primates (Tabuce et al . ; Jaeger et al .…”

Section: Discussionunclassified

“…This is particularly exemplified by hystricognathous rodents (e.g. Jaeger et al 1985Jaeger et al , 2010bMarivaux et al 2000Marivaux et al , 2002Marivaux et al , 2014aSallam et al 2009Sallam et al , 2012Barbi ere & Marivaux 2015) and anthropoid primates (Tabuce et al 2009;Jaeger et al 2010a;Chaimanee et al 2012;Seiffert 2012;Marivaux et al 2014b). If the current taxonomic composition and phylogeny of the Anomaluroidea are correct, anomaluroids would therefore be the unique example known thus far of a mammalian dispersal 'from Africa to Asia' during the Middle Eocene.…”

Section: Discussionmentioning

confidence: 99%

The early evolutionary history of anomaluroid rodents in Africa: new dental remains of a zegdoumyid (Zegdoumyidae, Anomaluroidea) from the Eocene of Tunisia

et al. 2015

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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

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“…; Fabre et al . , ; Barbière & Marivaux ) within the infra‐order Hystricognathi Tullberg, . Caviomorphs are commonly divided into four superfamilies: Erethizontoidea Bonaparte, (New World porcupines), Octodontoidea Waterhouse, (spiny rats and their kin), Chinchilloidea Bennett, (chinchillas and their kin) and Cavioidea Fischer de Waldheim, (guinea pig, capybaras and their kin).…”

mentioning

confidence: 99%

Late Oligocene caviomorph rodents from Contamana, Peruvian Amazonia

Boivin

Marivaux

Candela³

et al. 2016

Papers in Palaeontology

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The Deseadan South American Land Mammal Age (late Early Oligocene -Late Oligocene) attests to a time of great diversification in the caviomorph rodent fossil record. Nevertheless, Deseadan rodent-bearing localities in Neotropical lowlands are few and poorly known. Here we describe the rodent assemblages from two Late Oligocene localities, near Contamana, Loreto, Peru. Seven taxa are new to science: Palaeosteiromys amazonensis gen. et sp. nov., Plesiosteiromys newelli gen. et sp. nov., Loretomys minutus gen. et sp. nov., Scleromys praecursor sp. nov, Ucayalimys crassidens gen. et sp. nov., Chambiramys sylvaticus gen. et sp. nov. and Chambiramys shipiborum gen. et sp. nov. These rodent faunas show that caviomorphs were relatively diverse in Peruvian Amazonia during the Late Oligocene, with the co-occurrence of at least three extant superfamilies: Erethizontoidea, Octodontoidea and Chinchilloidea. Additionally, they mark the earliest known

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Phylogeny and evolutionary history of hystricognathous rodents from the Old World during the Tertiary: new insights into the emergence of modern “phiomorph” families

Cited by 19 publications

References 61 publications

Late middle Eocene caviomorph rodents from Contamana, Peruvian Amazonia

Late middle Eocene caviomorph rodents from Contamana, Peruvian Amazonia

The early evolutionary history of anomaluroid rodents in Africa: new dental remains of a zegdoumyid (Zegdoumyidae, Anomaluroidea) from the Eocene of Tunisia

Late Oligocene caviomorph rodents from Contamana, Peruvian Amazonia

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