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Tetrastylus

Osteichthyes - Rodentia - Dinomyidae

Taxonomy
Tetrastylus was named by Ameghino (1886). It is not extant.

It was assigned to Viscacciidae by Rovereto (1914); and to Eumegamyinae by McKenna and Bell (1997).

Synonyms
Synonymy list
YearName and author
1869Loxomylus Cope
1886Tetrastylus Ameghino p. 46
1914Tetrastylus Rovereto p. 68
1931Protelicomys Kraglievich
1931Tetrastylopsis Kraglievich
1997Tetrastylus McKenna and Bell p. 199

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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)
superfamilyChinchilloideaBennett 1833
familyDinomyidaePeters 1873
subfamilyEumegamyinaeKraglievich 1926
genusTetrastylusAmeghino 1886

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. †Tetrastylus Ameghino 1886
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†Tetrastylus angustidens Rusconi 1934
†Tetrastylus araucanus Ameghino 1904
†Tetrastylus atrophiatus Rovereto 1914
†Tetrastylus intermedius Rovereto 1914
†Tetrastylus laevigatus Ameghino 1886
†Tetrastylus montanus Ameghino 1891
Invalid names: Loxomylus Cope 1869 [synonym], Protelicomys Kraglievich 1931 [synonym], Tetrastylopsis Kraglievich 1931 [synonym]
Diagnosis
No diagnoses are available
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: Hendy et al. 2009, Lillegraven 1979, Ji et al. 2002, Carroll 1988, Nowak 1991

Age range: base of the Chasicoan to the top of the Pleistocene or 10.00000 to 0.01170 Ma

Collections (22 total)


Time interval Ma Country or state Original ID and collection number
Tortonian11.63 - 7.246Brazil (Acre) T. sp. (55602)
Late/Upper Miocene11.63 - 5.333Uruguay (San Jose) T. sp. (152542)
Late/Upper Miocene11.63 - 5.333Venezuela (Falcon) T. sp. (146431 146449)
Late/Upper Miocene11.63 - 5.333Brazil (Acre) T. sp. (134808)
Late/Upper Miocene11.63 - 5.333Brazil T. sp. (57989)
Chasicoan10.0 - 8.0Argentina (Buenos Aires) T. sp. (79180)
Huayquerian8.0 - 5.0Argentina (Entre Rios) T. aguilari, T. diffusus, T. robustus, T. atavus, T. laevigatus, T. sp. (55600)
Huayquerian8.0 - 5.0Argentina (Catamarca) T. sp. (157794) T. sp., T. intermedius (198543) T. sp., T. intermedius, T. laevigatus (198546 198547)
Huayquerian8.0 - 5.0Argentina (La Pampa) T. araucanus, T. laevigatus (87198) T. laevigatus (152065 152066 230751) T. sp. (152061 152063)
Messinian7.246 - 5.333Argentina (La Pampa) T. sp., T. intermedius (141939)
Montehermosan - Chapadmalalan5.0 - 3.0Argentina (Catamarca) T. intermedius (157795)
Chapadmalalan3.8 - 3.0Argentina (Catamarca) T. intermedius (205958)
Pleistocene (glacial)2.58 - 0.0117Brazil (Minas Gerais) T. walteri (140474)