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Ischyromys veterior

Mammalia - Rodentia - Ischyromyidae

Taxonomy
Ischyromys veterior was named by Matthew (1903). Its type specimen is AMNH 9658, a mandible (dentary), and it is a 3D body fossil. Its type locality is Pipestone Springs, which is in a Chadronian terrestrial claystone in the Renova Formation of Montana.

It was recombined as Titanotheriomys veterior by Miller and Gidley (1920), Wood (1937), Wood (1976) and Wood (1980).

Synonyms
Synonymy list
YearName and author
1903Ischyromys veterior Matthew p. 211
1920Titanotheriomys veterior Miller and Gidley
1937Titanotheriomys veterior Wood
1937Titanotheriomys wyomingensis Wood
1969Ischyromys veterior Wood
1976Titanotheriomys veterior Wood
1980Titanotheriomys veterior Wood
1994Ischyromys veterior Korth
1996Ischyromys veterior Heaton p. 393

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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()
RankNameAuthor
infraorderCynodontia()
Mammaliamorpha
Mammaliaformes
classMammalia
Cladotheria
Zatheria
subclassTribosphenida()
subclassTheria
Eutheria()
Placentalia
Boreoeutheria
EuarchontogliresMurphy et al. 2001
GliriformesWyss and Meng 1996
Glires()
Simplicidentata()
orderRodentiaBowdich 1821
familyIschyromyidaeAlston 1876
genusIschyromys
speciesveterior

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.

Ischyromys veterior Matthew 1903
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Invalid names: Titanotheriomys wyomingensis Wood 1937 [synonym]
Diagnosis
No diagnoses are available
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: Lillegraven 1979, Nowak 1999, Hendy et al. 2009, Ji et al. 2002, Carroll 1988

Age range: base of the Chadronian to the top of the Orellan or 37.20000 to 33.30000 Ma

Collections (30 total)


Time interval Ma Country or state Original ID and collection number
Chadronian37.2 - 33.9USA (Nebraska) Ischyromys veterior (16917 16930 16940 17014 17031) Titanotheriomys wyomingensis (16929)
Chadronian37.2 - 33.9USA (Wyoming) Ischyromys sp. (16961) Ischyromys veterior (16952 16955 17009) Titanotheriomys veterior (16920 16942 16960 16962 16963 16964 16965) Titanotheriomys wyomingensis (16902 16908)
Chadronian37.2 - 33.9USA (Colorado) Titanotheriomys veterior (16977)
Chadronian37.2 - 33.9USA (North Dakota) Ischyromys veterior (16991)
Chadronian37.2 - 33.9USA (Montana) Ischyromys veterior (16959 16988 type locality: 17010 17041) Titanotheriomys veterior (16924 16935 17028)
Middle Chadronian37.2 - 33.9Canada (Saskatchewan) Ischyromys veterior (16928)
Orellan33.9 - 33.3USA (Nebraska) Ischyromys typus (17297)