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

Leidymys juxtaparvulus

Osteichthyes - Rodentia - Cricetidae

Taxonomy
Leidymys juxtaparvulus was named by Korth (2010). Its type specimen is CM 83852, a tooth (left M1), 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 2015-06-15; modified by J. Marcot on 2026-05-06

Synonymy list
YearName and author
2010Leidymys juxtaparvulus Korth p. 126 figs. Figure 3A-E; Table 4
2014Leidymys juxtaparvulus Korth p. 391

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

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()
RankNameAuthor
infraorderCynodontia()
Mammaliamorpha
Mammaliaformes
classMammalia
Cladotheria
Zatheria
subclassTribosphenida()
subclassTheria
Eutheria()
Placentalia
Boreoeutheria
EuarchontogliresMurphy et al. 2001
GliriformesWyss and Meng 1996
Glires()
Simplicidentata()
orderRodentia
familyCricetidaeFischer von Waldheim 1817
genusLeidymys
speciesjuxtaparvulus

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.

Leidymys juxtaparvulus Korth 2010
show all | hide all
Diagnosis
ReferenceDiagnosis
W. W. Korth 2010Small species similar in size to L. korthi, smaller than all other species except L. parvus; differs from L. korthi in having M1 the protocone never attaching to anterocone and in possessing a small anterostyle; differs from other species in having upper molars with a long but weak mesoloph that is much lower than the other lophs; differs from L. korthi and L. alicae in having a small spur present lingual to hypoconid on m1 within the posterior basin (as in L. nematodon and L. blacki); differs from L. nematodon and L. blacki in lacking a connection between the protoconid and anteroconid on m1.
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, Hendy et al. 2009, Lillegraven 1979, Carroll 1988, Ji et al. 2002

Age range: Whitneyan or 31.80000 to 29.50000 Ma

Collections (2 total)


Time interval Ma Country or state Original ID and collection number
Whitneyan31.8 - 29.5USA (South Dakota) Leidymys juxtaparvulus (170168 type locality: 278678)