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Josephoartigasia monesi

Mammalia - Rodentia - Dinomyidae

Taxonomy
Josephoartigasia monesi was named by Rinderknecht and Blanco (2008). Its type specimen is MNHN 921, a skull (Skull), and it is a 3D body fossil. Its type locality is Kiyu, which is in a Montehermosan/Ensenadan estuary/bay siltstone/claystone in the San José Formation of Uruguay.

Synonymy list
YearName and author
2008Josephoartigasia monesi Rinderknecht and Blanco

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
—Osteichthyes()
subclassSarcopterygii()
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
—Tetrapoda
—Reptiliomorpha
—Anthracosauria
subclassAmphibiosauriaKuhn 1967
—Cotylosauria()
—Amniota
subclassSynapsida
—Therapsida()
infraorderCynodontia()
—Mammaliamorpha
RankNameAuthor
—Mammaliaformes
classMammalia
—Cladotheria
—Zatheria
subclassTribosphenida()
subclassTheria
—Eutheria()
—Placentalia
—Boreoeutheria
—EuarchontogliresMurphy et al. 2001
—GliriformesWyss and Meng 1996
—Glires()
—Simplicidentata()
orderRodentiaBowdich 1821
—CtenohystricaHuchon et al. 2000
infraorderHystricognathi(Tullberg 1899)
—Caviomorpha(Wood and Patterson 1955)
superfamilyChinchilloideaBennett 1833
familyDinomyidaePeters 1873
genusJosephoartigasiaMones 2007
speciesmonesi

If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.

†Josephoartigasia monesi Rinderknecht and Blanco 2008
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Diagnosis
ReferenceDiagnosis
A. Rinderknecht and R. E. Blanco 2008Josephoartigasia monesi is the largest recorded rodent. Like the only previously known species of the genus Josephoartigasia (Josephoartigasia magna; Francis & Mones 1966), the lophs are covered by a slightly undulated layer of enamel and separated by extremely thin sheets of cement. It is differentiated from J. magna by its larger size and the almost equal occlusal surface area of all its molars. The relative length of the molar series is reduced and the incisors are proportionally mediolaterally wide.
Measurements
No measurements are available
Composition: phosphaticsubp
Environment: terrestrialsubc
Locomotion: actively mobilec
Life habit: ground dwellingf
Diet: frugivoref
Diet 2: folivoref
Reproduction: viviparoussubc
Created: 2005-06-08 10:11:09
Modified: 2005-08-26 13:32:01
Source: f = family, subc = subclass, c = class, subp = subphylum
References: Nowak 1991, Carroll 1988, Ji et al. 2002, Lillegraven 1979, Hendy et al. 2009

Age range: base of the Montehermosan to the top of the Ensenadan or 5.00000 to 0.40000 Ma

Collections: one only


Time interval Ma Country or state Original ID and collection number
Montehermosan - Ensenadan5.0 - 0.4Uruguay (San Jose) Josephoartigasia monesi (type locality: 152517)