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Protosteiromys medianus

Mammalia - Rodentia - Erethizontidae

Taxonomy
Eosteiromys medianus was named by Ameghino (1903). Its type specimen is MACN A52-111, a tooth (right M1 or M2), and it is a 3D body fossil. Its type locality is La Flecha, which is in a Deseadan terrestrial mudstone in the Deseado Formation of Argentina.

It was recombined as Protosteiromys medianus by Wood and Patterson (1959) and Pérez et al. (2018).

Sister species lacking formal opinion data
P. asmeodeophilus

Synonymy list
YearName and author
1903Eosteiromys medianus Ameghino p. 129
1904Eosteiromys medianus Ameghino p. 100
1959Protosteiromys medianus Wood and Patterson
2018Protosteiromys medianus Pérez et al.

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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
classMammalia
RankNameAuthor
—Theriamorpha(Rowe 1993)
—Theriiformes()
—Trechnotheria
—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)
superfamilyErethizontoideaBonaparte 1845
familyErethizontidaeBonaparte 1845
genusProtosteiromys
speciesmedianus(Ameghino 1903)

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.

†Protosteiromys medianus Ameghino 1903
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
Composition: phosphaticsubp
Environment: terrestrialsubc
Locomotion: actively mobilec
Life habit: arborealf
Diet: herbivoref
Reproduction: viviparoussubc
Created: 2005-06-08 10:11:09
Modified: 2005-08-26 13:29:34
Source: f = family, subc = subclass, c = class, subp = subphylum
References: Lillegraven 1979, Nowak 1991, Hendy et al. 2009, Carroll 1988, Ji et al. 2002

Age range: Deseadan or 29.00000 to 21.00000 Ma

Collections (2 total)


Time interval Ma Country or state Original ID and collection number
Deseadan29.0 - 21.0Argentina (Santa Cruz) Eosteiromys medianus, Protosteiromys medianus (50074)
Deseadan29.0 - 21.0Argentina (Chubut) Eosteiromys medianus, Protosteiromys medianus (14211)