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Chasichimys bonaerense

Osteichthyes - Rodentia

Taxonomy
Chasichimys bonaerense was named by Pascual (1967). Its type specimen is MLP 60-VI-18-108, a mandible (fragmentary right mandible with intra-alveolar portion of il, ml and base of dp4.), and it is a 3D body fossil. Its type locality is Barrancas del Arroyo Chasicó, which is in a Chasicoan terrestrial horizon in the Arroyo Chasicó Formation of Argentina. It is the type species of Chasichimys.

Synonymy list
YearName and author
1967Chasichimys bonaerense Pascual
1999Chasichimys bonaerense Verzi

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
classOsteichthyes
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)
superfamilyOctodontoideaWaterhouse 1839
genusChasichimys
speciesbonaerense

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.

†Chasichimys bonaerense Pascual 1967
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Diagnosis
ReferenceDiagnosis
D. H. Verzi 1999The least hypsodont species of the genus. Molars with roots already formed when the metaflexid is still open.
Measurements
No measurements are available
Composition: phosphaticsubp
Environment: terrestrialsubc
Locomotion: actively mobilec
Life habit: ground dwellingo
Diet: herbivoreo
Reproduction: viviparoussubc
Created: 2005-08-26 14:04:46
Modified: 2005-08-26 16:04:46
Source: o = order, subc = subclass, c = class, subp = subphylum
References: Nowak 1999, Ji et al. 2002, Hendy et al. 2009, Lillegraven 1979, Carroll 1988

Age range: base of the Chasicoan to the top of the Tortonian or 10.00000 to 7.24600 Ma

Collections (4 total)


Time interval Ma Country or state Original ID and collection number
Serravallian - Tortonian13.82 - 7.246Argentina (La Pampa) Chasichimys bonaerense (231228)
Chasicoan10.0 - 8.0Argentina (Buenos Aires) Chasichimys bonaerense (type locality: 140913)
Huayquerian8.0 - 5.0Argentina (La Pampa) Chasichimys bonaerense (152063 192166)