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Palaearctomys

Osteichthyes - Rodentia - Sciuridae

Taxonomy
Palaearctomys was named by Douglass (1903). It is not extant.

It was assigned to Marmotini by Black (1963); and to Sciuridae by Douglass (1903), Bryant (1945), Wilson (1960), McKenna and Bell (1997).

Species
P. montanus (syn. P. macrorhinus)
Entered
by J. Alroy on 2003-01-23; modified by J. Marcot on 2018-03-06

Synonymy list
YearName and author
1903Palaearctomys Douglass
1945Palaearctomys Bryant p. 359
1960Palaeoarctomys Wilson p. 57
1963Palaearctomys Black p. 150
1997Palaearctomys McKenna and Bell

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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()
infraorderCynodontia()
RankNameAuthor
—Mammaliamorpha
—Mammaliaformes
classMammalia
—Cladotheria
—Zatheria
subclassTribosphenida()
subclassTheria
—Eutheria()
—Placentalia
—Boreoeutheria
—EuarchontogliresMurphy et al. 2001
—GliriformesWyss and Meng 1996
—Glires()
—Simplicidentata()
orderRodentia
superfamilySciuroidea
familySciuridae
tribeMarmotini
genusPalaearctomys

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. †Palaearctomys Douglass 1903
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†Palaearctomys montanus Douglass 1903
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Invalid names: Palaearctomys macrorhinus Douglass 1903 [synonym]
Diagnosis
ReferenceDiagnosis
M. D. Bryant 1945Skull larger than that of other North American sciurids, except Marmota. Rostrum massive; cranium markedly flattened and sagittal crest prominent; parietal ridges fuse at level of posterior ends of temporal fossae; two chambers (postpalatine vacuities) open posteriorly below posterior end of hard palate. Incisors large and strong, with many longitudinal striations; upper incisors with two or more distinct grooves on anterior surface; cheek teeth resemble those of Marmota but are more brachydont and are smaller in proportion to the size of the skull.
Measurements
No measurements are available
Composition: phosphaticsubp
Environment: terrestrialsubc
Locomotion: actively mobilec
Life habit: scansorialf
Diet: granivoref
Diet 2: frugivoref
Reproduction: viviparoussubc
Created: 2005-06-08 10:11:09
Modified: 2005-08-26 13:04:24
Source: f = family, subc = subclass, c = class, subp = subphylum
References: Hendy et al. 2009, Ji et al. 2002, Carroll 1988, Nowak 1991, Lillegraven 1979
Collections
No collection or age range data are available