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Tetrastylus intermedius

Mammalia - Rodentia - Dinomyidae

Taxonomy
Tetrastylus intermedius was named by Rovereto (1914) [Type specimen with both dental series, missing the nasals, both zygomatic arches, the incisors, and the right P4. Almost complete mandible, with both dental series, missing only the posterior articular and angular portion in both hemimandibles and the extralveolar portion of the incisors. The specimen includes associated broken postcranial remains.]. Its type specimen is MACN 8323, a skull (almost complete skull and mandible), and it is a 3D body fossil. Its type locality is Santa Maria Valley Andalhuala Fm, which is in a Montehermosan/Chapadmalalan terrestrial horizon in the Andalhuala Formation of Argentina.

Synonymy list
YearName and author
1914Tetrastylus intermedius Rovereto p. 69

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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
—Mammaliaformes
RankNameAuthor
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
speciesintermedius

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.

†Tetrastylus intermedius Rovereto 1914
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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: Nowak 1991, Lillegraven 1979, Carroll 1988, Ji et al. 2002, Hendy et al. 2009

Age range: base of the Messinian to the top of the Chapadmalalan or 7.24600 to 3.00000 Ma

Collections (6 total)


Time interval Ma Country or state Original ID and collection number
Huayquerian8.0 - 5.0Argentina (Catamarca) Tetrastylus intermedius (198543 198546 198547)
Messinian7.246 - 5.333Argentina (La Pampa) Tetrastylus intermedius (141939)
Montehermosan - Chapadmalalan5.0 - 3.0Argentina (Catamarca) Tetrastylus intermedius (type locality: 157795)
Chapadmalalan4.0 - 3.0Argentina (Catamarca) Tetrastylus intermedius (205958)