Basic info Taxonomic history Classification Included Taxa
Morphology Ecology and taphonomy External Literature Search Age range and collections

Miochinchilla

Mammalia - Rodentia - Chinchillidae

Taxonomy
Miochinchilla was named by Croft et al. (2021). Its type is Miochinchilla surirense.

It was assigned to Chinchillidae by Croft et al. (2021).

Species
M. plurinacionalis, M. surirense (type species)

Synonymy list
YearName and author
2021Miochinchilla Croft et al.

Is something missing? Join the Paleobiology Database and enter the data

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()
RankNameAuthor
—Mammaliamorpha
—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)
familyChinchillidaeBennett 1833
genusMiochinchilla

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.

G. †Miochinchilla Croft et al. 2021
show all | hide all
†Miochinchilla plurinacionalis Croft et al. 2021
†Miochinchilla surirense Croft et al. 2021
Diagnosis
ReferenceDiagnosis
D. A. Croft et al. 2021A pan-chinchilline that differs from Chin- chilla and Lagidium in having: oblique upper molar laminae (ca. 45° relative to the long axis of the tooth row rather than perpendicular to it); sinuous lower molar laminae (rather than straight or gently curved); a laminar distal lobe of M3 (rather than elliptical to subtriangular); a neurovascular sulcus on the medial floor of the infraorbital foramen laterally delineated by a low crest; a larger and more robust coronoid process; and a complete humeral entepicondylar (supracondyloid) canal. Intermediate in size between Chinchilla lanigera and Lagidium viscacia based on premolar-molar row length and other craniodental measures.
Measurements
No measurements are available
Composition: phosphaticsubp
Environment: terrestrialsubc
Locomotion: actively mobilec
Life habit: ground dwellingf
Diet: herbivoref
Reproduction: viviparoussubc
Created: 2005-06-08 10:11:09
Modified: 2005-08-26 13:31:06
Source: f = family, subc = subclass, c = class, subp = subphylum
References: Ji et al. 2002, Carroll 1988, Lillegraven 1979, Nowak 1991, Hendy et al. 2009

Age range: base of the Santacrucian to the top of the Serravallian or 17.50000 to 11.63000 Ma

Collections (5 total)


Time interval Ma Country or state Original ID and collection number
Santacrucian17.5 - 16.3Chile M. surirense (103804)
Langhian15.98 - 13.82Bolivia (Potosí) M. plurinacionalis (211381)
Serravallian13.82 - 11.63Bolivia (Tarija) M. plurinacionalis (197502)
Laventan13.8 - 11.0Bolivia (Tarija) M. plurinacionalis (38071 133664)