Basic info Taxonomic history Classification Included Taxa
Morphology Ecology and taphonomy External Literature Search Age range and collections

Acritoparamys atavus

Mammalia - Rodentia - Ischyromyidae

Taxonomy
Paramys atavus was named by Jepsen (1937). Its type locality is Bear Creek, which is in a Clarkforkian terrestrial horizon in the Fort Union Formation of Montana.

It was recombined as Acritoparamys atavus by Korth (1984), Ivy (1990).

Synonymy list
YearName and author
1937Paramys atavus Jepsen
1984Acritoparamys atavus Korth
1990Acritoparamys atavus Ivy
1996Paramys atavus Dawson and Beard

Is something missing? Join the Paleobiology Database and enter the data

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
genusAcritoparamys
speciesatavus()

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.

†Acritoparamys atavus Jepsen 1937
show all | hide all
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, Carroll 1988, Lillegraven 1979, Nowak 1999

Age range: base of the Clarkforkian to the top of the Wasatchian or 56.20000 to 50.50000 Ma

Collections (4 total)


Time interval Ma Country or state Original ID and collection number
Clarkforkian56.2 - 54.9USA (Wyoming) Acritoparamys atavus (190416)
Clarkforkian56.2 - 54.9USA (Montana) Paramys atavus (type locality: 15079)
Wasatchian54.9 - 50.5USA (Wyoming) Acritoparamys atavus (15586 46809)