NATURAL HISTORY · CATALOGUE RECORD
Sumatran Mountain Squirrel
Sundasciurus (Sundasciurus) altitudinis (Robinson & Kloss, 1916)
Source-backed taxonomic record
Accepted species in Catalogue of Life’s 11 September 2026 base release. This preserves the source classification and available supporting data; it is not a completed species monograph.
Open encyclopedia reference
The Sumatran mountain squirrel (Sundasciurus altitudinis) is a species of rodent in the family Sciuridae. Its skull reaches sizes between 41–43 mm (1.6–1.7 in), overlapping with that of the Palawan montane squirrel. It was originally described as a subspecies of Sundasciurus tenuis.
Wikipedia contributors, Sumatran mountain squirrel; see linked history · CC BY-SA 4.0 . Plain-text lead excerpt, at most 180 words; no infobox or later sections Retrieved 2026-10-05T11:27:46.728544+00:00. This reference remains separate from the taxonomic record.
Identity & source status
- Scientific name
- Sundasciurus (Sundasciurus) altitudinis (Robinson & Kloss, 1916)
- Name authority
- (Robinson & Kloss, 1916)
- Common name
- Sumatran Mountain Squirrel
- Rank
- species
- Accepted status
- accepted
- Kingdom
- Animalia
- Phylum
- Chordata
- Class
- Mammalia
- Order
- Rodentia
- Family
- Sciuridae
- Genus
- Sundasciurus
- 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.
- domainEukaryota (Chatton, 1925) Whittaker & Margulis, 1978
- kingdomAnimalia
- phylumChordata
- subphylumVertebrata
- infraphylumGnathostomata
- parvphylumOsteichthyes
- megaclassTetrapoda
- classMammalia Linnaeus, 1758
- subclassTheria Parker & Haswell, 1897
- infraclassEutheria Gill, 1872
- orderRodentia Bowdich, 1821
- suborderSciuromorpha Brandt, 1855
- familySciuridae Fischer de Waldheim, 1817
- subfamilyCallosciurinae Pocock, 1923
- genusSundasciurus Moore, 1958
- subgenusSundasciurus Moore, 1958
- speciesSundasciurus (Sundasciurus) altitudinis (Robinson & Kloss, 1916)
Close classified relatives
These entries share the source’s genus, Sundasciurus. They are not necessarily the closest relatives established by molecular evidence.
| Species | Classification | Source status |
|---|---|---|
| Culion Tree SquirrelSundasciurus (Aletesciurus) moellendorffi (Matschie, 1898) | SciuridaeChordata | Accepted speciesRecorded extant |
| Palawan Montane SquirrelSundasciurus (Aletesciurus) rabori Heaney, 1979 | SciuridaeChordata | Accepted speciesRecorded extant |
| Samar SquirrelSundasciurus (Aletesciurus) samarensis (Steere, 1890) | SciuridaeChordata | Accepted speciesRecorded extant |
| Low's SquirrelSundasciurus (Sundasciurus) lowii (Thomas, 1892) | SciuridaeChordata | Accepted speciesRecorded extant |
| Northern Palawan Tree SquirrelSundasciurus (Aletesciurus) juvencus (Thomas, 1908) | SciuridaeChordata | Accepted speciesRecorded extant |
| Busuanga SquirrelSundasciurus (Aletesciurus) hoogstraali (Sanborn, 1952) | SciuridaeChordata | Accepted speciesRecorded extant |
| Brooke's SquirrelSundasciurus (Sundasciurus) brookei (Thomas, 1892) | SciuridaeChordata | Accepted speciesRecorded extant |
| Southern Palawan Tree SquirrelSundasciurus (Aletesciurus) steerii (Günther, 1877) | SciuridaeChordata | Accepted speciesRecorded extant |
| Mindanao SquirrelSundasciurus (Aletesciurus) mindanensis (Steere, 1890) | SciuridaeChordata | Accepted speciesRecorded extant |
| Philippine Tree SquirrelSundasciurus (Aletesciurus) philippinensis (Waterhouse, 1839) | SciuridaeChordata | Accepted speciesRecorded extant |
| Upland SquirrelSundasciurus (Sundasciurus) tahan (Bonhote, 1908) | SciuridaeChordata | Accepted speciesRecorded extant |
| Slender SquirrelSundasciurus (Sundasciurus) tenuis (Horsfield, 1824) | SciuridaeChordata | Accepted speciesRecorded extant |
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.
- https://www.itis.gov/servlet/SingleRpt/SingleRpt?search_topic=TSN&search_value=930331 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. A suitable sourced image remains to be added.
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:7B4LB. Classification follows source parent identifiers. English common names may vary by region.