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Metanoiamys paradoxus

Mammalia - Rodentia - Eomyidae

Discussion

Type locality is either Dry Hole Quarry [16960] or B Minus 44’ Quarry [16961]

Taxonomy
Metanoiamys paradoxus was named by Emry and Korth (2012). Its type specimen is USNM 534706, a tooth (left m2), and it is a 3D body fossil.

Synonymy list
YearName and author
2012Metanoiamys paradoxus Emry and Korth p. 422 fig. 4
2022Metanoiamys paradoxus Korth 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
RankNameAuthor
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
infraorderCastorimorpha
superfamilyGeomyoideaBonaparte 1845
familyEomyidaeWinge 1887
genusMetanoiamys
speciesparadoxus

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.

Metanoiamys paradoxus Emry and Korth 2012
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Diagnosis
ReferenceDiagnosis
R. J. Emry and W. W. Korth 2012Small species, size similar to M. lacus; lophs on cheek teeth high relative to those of earlier occurring species; ectolophid on lower molars incomplete; connection to anterior cingulid (= adlophulid) absent on 50% of m1 and m2; dP3 and P3 not present.
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: Nowak 1999, Lillegraven 1979, Carroll 1988, Ji et al. 2002, Hendy et al. 2009

Age range: Chadronian or 37.20000 to 33.90000 Ma

Collections (3 total)


Time interval Ma Country or state Original ID and collection number
Chadronian37.2 - 33.9USA (Wyoming) Metanoiamys paradoxus (16960 16961)
Late/Upper Chadronian - Orellan37.2 - 33.3USA (Nebraska) Metanoiamys paradoxus (230806)