Mouse-like Hamster

Open encyclopedia reference

The Zagros Mountains mouse-like hamster (Calomyscus bailwardi) is a relatively little-known rodent which was the first species of mouse-like hamster to be described. The species is distributed throughout much of southern Iran, particularly in the Zagros mountains. It is also known as the Iranian mouse-like hamster, though there are several species of mouse-like hamster found in different parts of Iran.

This is the largest species of mouse-like hamster. They are dark grey on top and white underneath. They are found in habitat ranging from barren rocky hillsides to wetter regions. They are known to feed on herbs and grass seed.

Graphodatsky et al. (2000) recovered three distinct karyotypes from different regions throughout the range of C. bailwardi (2n=37, FNa=44; 2n=52, FNa=56; 2n=50, FNa=50). This may suggest that further taxonomic revision is required. Vorontsov et al. (1979) emphasized how little is known about the species and that the current definition is based largely on distribution.

Many sources still refer to all members of Calomyscus as part of the species C. bailwardi.

Wikipedia contributors, Zagros Mountains mouse-like hamster; see linked history · CC BY-SA 4.0 . Plain-text lead excerpt, at most 180 words; no infobox or later sections Retrieved 2026-10-05T06:56:19.828430+00:00. This reference remains separate from the taxonomic record.

Identity & source status

Scientific name

Calomyscus bailwardi Thomas, 1905

Name authority

Thomas, 1905

Common name

Mouse-like Hamster

Rank

species

Accepted status

accepted

Kingdom

Animalia

Phylum

Chordata

Class

Mammalia

Order

Rodentia

Family

Calomyscidae

Genus

Calomyscus

Extinction status

Recorded extant

Classification family tree

Nested taxonomic groups from the source. This is not a direct-ancestor chain, a dated evolutionary tree or a phylogenetic reconstruction.

1. domainEukaryota (Chatton, 1925) Whittaker & Margulis, 1978
2. kingdomAnimalia
3. phylumChordata
4. subphylumVertebrata
5. infraphylumGnathostomata
6. parvphylumOsteichthyes
7. megaclassTetrapoda
8. classMammalia Linnaeus, 1758
9. subclassTheria Parker & Haswell, 1897
10. infraclassEutheria Gill, 1872
11. orderRodentia Bowdich, 1821
12. suborderMyomorpha Brandt, 1855
13. superfamilyMuroidea Illiger, 1811
14. familyCalomyscidae Vorontsov & Potapova, 1979
15. genusCalomyscus Thomas, 1905
16. speciesCalomyscus bailwardi Thomas, 1905

Close classified relatives

These entries share the source’s genus, Calomyscus. They are not necessarily the closest relatives established by molecular evidence.

Browse 4 records assigned to Calomyscidae.

Documented distribution

Source distribution statements, not a complete range map. A listed locality is not necessarily a place of origin.

Source literature & publication evidence

References attached to this source record, including nomenclatural citations where supplied. This is a selected bibliography; abbreviated citations remain in the source’s form.

1. https://www.itis.gov/servlet/SingleRpt/SingleRpt?search_topic=TSN&search_value=632750 Source fields: Taxon.tsv dwc:namePublishedIn, Taxon.tsv dcterms:references

Origins, evidence & remaining research

Name authority and publication references document nomenclature where the source supplies it. They do not establish evolutionary origins or the earliest fossil occurrence.

Specimen-level evidence, morphology, ecological research, phylogenetic studies, a comprehensive bibliography and a located literary passage have not yet been compiled for this record.

Dataset citation & attribution

This exact taxon in ChecklistBank · Catalogue of Life 2026-09-11

Catalogue of Life 2026-09-11; dataset 316321; doi:10.48580/dgz5n. https://creativecommons.org/licenses/by/4.0/ . Retrieved 5 October 2026.

Stable key: col:PYLD. Classification follows source parent identifiers. English common names may vary by region.