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Heliscomys medius

Osteichthyes - Rodentia - Heliscomyidae

Taxonomy
Heliscomys medius was named by Korth (2007). Its type specimen is CM 76298, a maxilla (maxilla with left P4-M2), and it is a 3D body fossil. Its type locality is Blue Ash Local Fauna, which is in a Whitneyan terrestrial horizon in South Dakota.

Entered
by J. Marcot on 2026-05-05; modified by J. Marcot on 2026-05-04

Synonymy list
YearName and author
2007Heliscomys medius Korth pp. 36 - 37 figs. Figure 3A, Table 2
2019Heliscomys medius Korth et al. p. 24 figs. Figure 13A,B

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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()
RankNameAuthor
Mammaliamorpha
Mammaliaformes
classMammalia
Cladotheria
Zatheria
subclassTribosphenida()
subclassTheria
Eutheria()
Placentalia
Boreoeutheria
EuarchontogliresMurphy et al. 2001
GliriformesWyss and Meng 1996
Glires()
Simplicidentata()
orderRodentia
infraorderCastorimorpha
superfamilyGeomyoideaBonaparte 1845
familyHeliscomyidae
genusHeliscomys
speciesmedius

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.

Heliscomys medius Korth 2007
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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: Carroll 1988, Ji et al. 2002, Nowak 1999, Hendy et al. 2009, Lillegraven 1979

Age range: Whitneyan or 31.80000 to 29.50000 Ma

Collections: one only


Time interval Ma Country or state Original ID and collection number
Whitneyan31.8 - 29.5USA (South Dakota) Heliscomys medius (type locality: 278678)