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Gregorymys formosus

Mammalia - Rodentia - Entoptychidae

Taxonomy
Entoptychus formosus was named by Matthew (1907). Its type locality is AMNH Rosebud 20, which is in a Harrisonian terrestrial horizon in the Harrison Formation of South Dakota.

It was recombined as Gregorymys formosus by Wood (1936), Macdonald (1963), Macdonald (1970), Rensberger (1971) and Wahlert and Souza (1988).

Synonymy list
YearName and author
1907Entoptychus formosus Matthew
1936Gregorymys formosus Wood
1963Gregorymys formosus Macdonald
1970Gregorymys formosus Macdonald
1971Gregorymys formosus Rensberger
1988Gregorymys formosus Wahlert and Souza

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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
RankNameAuthor
Mammaliaformes
classMammalia
Theriamorpha(Rowe 1993)
Theriiformes()
Trechnotheria
Cladotheria
Zatheria
subclassTribosphenida()
subclassTheria
Eutheria()
Placentalia
Boreoeutheria
EuarchontogliresMurphy et al. 2001
GliriformesWyss and Meng 1996
Glires()
Simplicidentata()
orderRodentiaBowdich 1821
familyEntoptychidae(Miller and Gidley 1918)
genusGregorymysWood 1936
speciesformosus()

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.

Gregorymys formosus Matthew 1907
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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: Hendy et al. 2009, Ji et al. 2002, Lillegraven 1979, Nowak 1999, Carroll 1988

Age range: base of the Monroecreekian to the top of the Harrisonian or 26.30000 to 20.43000 Ma

Collections (14 total)


Time interval Ma Country or state Original ID and collection number
Monroecreekian26.3 - 24.8USA (South Dakota) Gregorymys formosus (17550 17556 17557 17559 17561 17562 17564)
Monroecreekian26.3 - 24.8USA (Nebraska) Gregorymys formosus (67637)
Harrisonian24.8 - 20.43USA (South Dakota) Gregorymys formosus (type locality: 17457 17756 17828)
Harrisonian24.8 - 20.43USA (Nebraska) Gregorymys formosus (17802 17843)
Harrisonian24.8 - 20.43USA (Wyoming) Gregorymys formosus (17794)