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NATURAL HISTORY · CATALOGUE RECORD

Twisted-toothed Giant Hutia

Quemisia gravis Miller, 1929

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.

Quemisia gravis

Quemisia gravis

Michael Brett-Surman · CC0 · Image source

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Open encyclopedia reference

The twisted-toothed mouse (Quemisia gravis), also known as the twisted-toothed giant hutia, is an extinct species of rodent in the family Heptaxodontidae. It is monotypic within the genus Quemisia. It was endemic to Hispaniola (today Haiti and the Dominican Republic).

Wikipedia contributors, Twisted-toothed mouse; see linked history · CC BY-SA 4.0 . Plain-text lead excerpt, at most 180 words; no infobox or later sections Retrieved 2026-10-05T11:47:57.715934+00:00. This reference remains separate from the taxonomic record.

Identity & source status

Scientific name
Quemisia gravis Miller, 1929
Name authority
Miller, 1929
Common name
Twisted-toothed Giant Hutia
Rank
species
Accepted status
accepted
Kingdom
Animalia
Phylum
Chordata
Class
Mammalia
Order
Rodentia
Family
Heptaxodontidae
Genus
Quemisia
Extinction status
Recorded extinct

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. suborderHystricomorpha Brandt, 1855
  13. infraorderHystricognathi Brandt, 1855
  14. familyHeptaxodontidae Anthony, 1917
  15. subfamilyHeptaxodontinae Anthony, 1917
  16. genusQuemisia Miller, 1929
  17. speciesQuemisia gravis Miller, 1929

Close classified relatives

No other member of this genus is present in the selected snapshot.

Browse 4 records assigned to Heptaxodontidae.

Documented distribution

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

Caribbean

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=584890 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:4R434. Classification follows source parent identifiers. English common names may vary by region.