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

Leptotomus

Mammalia - Rodentia - Ischyromyidae

Taxonomy
Leptotomus was named by Matthew (1910) [named by Matthew 1910 as Paramys (Leptotomus); raised to genus level]. It is not extant.

It was assigned to Ischyromyidae by Burke (1934) and McKenna and Bell (1997).

Synonymy list
YearName and author
1910Leptotomus Matthew
1934Leptotomus Burke
1997Leptotomus McKenna and Bell

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()
infraorderCynodontia()
RankNameAuthor
Mammaliamorpha
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
familyIschyromyidaeAlston 1876
genusLeptotomusMatthew 1910

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.

G. †Leptotomus Matthew 1910
show all | hide all
Leptotomus caryophilus Wilson 1940
Leptotomus guildayi Black 1971
hide
Invalid names: Prosciurus major Russell 1972 [synonym]
Leptotomus parvus Wood 1959
hide
Invalid names: Leptotomus bridgerensis Wood 1962 [synonym]
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: Ji et al. 2002, Hendy et al. 2009, Nowak 1999, Carroll 1988, Lillegraven 1979

Age range: base of the Bridgerian to the top of the Chadronian or 50.30000 to 33.90000 Ma

Collections (58 total)


Time interval Ma Country or state Original ID and collection number
Eocene56.0 - 33.9USA (California) L. sp. (16816)
Bridgerian50.3 - 46.2USA (Colorado) L. bridgerensis (16241)
Bridgerian50.3 - 46.2USA (Wyoming) L. bridgerensis (16418 16647) L. parvus (16097 16109 16111 16113 16114 16139 16191 16192 16260 16262 16286 16305 16309 16310 16315 16325 16330 16339 16341 16345 16355 16366 16367 16373 16379 16384 16444) L. sp., L. parvus (16137 16228)
Early/Lower Uintan46.2 - 40.4USA (California) L. caryophilus (16665 16666 16745 16751 16752) L. sp. (16672)
Early/Lower Uintan46.2 - 40.4USA (Colorado) L. sp., L. bridgerensis (16623)
Late/Upper Uintan46.2 - 40.4USA (Texas) L. sp. (16614)
Late/Upper Uintan46.2 - 40.4Canada (Saskatchewan) L. sp., L. guildayi (16626)
Uintan46.2 - 40.4USA (Wyoming) L. guildayi (16513 16514 16517) L. sp. (16649)
Uintan46.2 - 40.4USA (California) L. caryophilus (16786) L. sp. (16590)
Uintan46.2 - 40.4USA (Texas) L. sp. (16624)
Uintan46.2 - 40.4USA (Utah) L. sp. (213066)
Duchesnean40.4 - 37.2USA (California) L. sp. (16813)
Duchesnean40.4 - 37.2Canada (Saskatchewan) L. sp., L. guildayi (16845)
Duchesnean40.4 - 37.2USA (Wyoming) L. guildayi (16826 16853 16884)
Chadronian37.2 - 33.9USA (Nebraska) L. sp. (16940 17014)
Chadronian37.2 - 33.9Canada (Saskatchewan) L. guildayi (16919)