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NATURAL HISTORY · CATALOGUE RECORD

Genie’s dogfish

Squalus clarkae Pfleger, Grubbs, Cotton & Daly-Engel, 2018

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

Squalus clarkae, also known as Genie's dogfish, is a species of shark from the Gulf of Mexico and western Atlantic. It was described in 2018 and named in honor of ichthyologist Eugenie Clark. It was previously believed to be a part of Squalus mitsukurii, but genetic analysis revealed it to be a distinct species. Individuals are usually between 50 centimetres (20 in) and 70 centimetres (28 in) long. This species is known to be longer in length in comparison to the Squalus Mitsukurii. Their first dorsal fin is also structured differently than the other species in the genus Squalus.

Wikipedia contributors, Squalus clarkae; see linked history · CC BY-SA 4.0 . Plain-text lead excerpt, at most 180 words; no infobox or later sections Retrieved 2026-10-05T05:00:44.997480+00:00. This reference remains separate from the taxonomic record.

Identity & source status

Scientific name
Squalus clarkae Pfleger, Grubbs, Cotton & Daly-Engel, 2018
Name authority
Pfleger, Grubbs, Cotton & Daly-Engel, 2018
Common name
Genie’s dogfish
Rank
species
Accepted status
accepted
Kingdom
Animalia
Phylum
Chordata
Class
Elasmobranchii
Order
Squaliformes
Family
Squalidae
Genus
Squalus
Extinction status
Recorded extant

Source habitat flags: Marine: yes · Freshwater: no · Terrestrial: no. These do not form a complete habitat description.

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. parvphylumChondrichthyes
  7. classElasmobranchii
  8. subclassNeoselachii
  9. infraclassSelachii
  10. superorderSqualomorphi
  11. orderSqualiformes Compagno, 1973
  12. familySqualidae de Blainville, 1816
  13. genusSqualus Linnaeus, 1758
  14. speciesSqualus clarkae Pfleger, Grubbs, Cotton & Daly-Engel, 2018

Close classified relatives

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

SpeciesClassificationSource status
Squalus bahiensis Viana, Carvalho & Gomes, 2016SqualidaeChordataAccepted speciesExtinction status not supplied
Squalus bassi Viana, Carvalho & Ebert, 2017SqualidaeChordataAccepted speciesExtinction status not supplied
Japanese shortnose spurdogSqualus brevirostris Tanaka, 1917SqualidaeChordataAccepted speciesExtinction status not supplied
Longnose spurdogSqualus blainville (Risso, 1827)SqualidaeChordataAccepted speciesExtinction status not supplied
Squalus acutipinnis Regan, 1908SqualidaeChordataAccepted speciesExtinction status not supplied
Squalus altipinnis Last, White & Stevens, 2007SqualidaeChordataAccepted speciesExtinction status not supplied
Squalus albifrons Last, White & Stevens, 2007SqualidaeChordataAccepted speciesExtinction status not supplied
Squalus hemipinnis White, Last & Yearsley, 2007SqualidaeChordataAccepted speciesExtinction status not supplied
Squalus chloroculus Last, White & Motomura, 2007SqualidaeChordataAccepted speciesExtinction status not supplied
Squalus crassispinus Last, Edmunds & Yearsley, 2007SqualidaeChordataAccepted speciesExtinction status not supplied
Cuban dogfishSqualus cubensis Howell Rivero, 1936SqualidaeChordataAccepted speciesExtinction status not supplied
Squalus mahia Viana, Lisher & Carvalho, 2017SqualidaeChordataAccepted speciesExtinction status not supplied

Browse 24 records assigned to Squalidae.

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. Pfleger, M. O., Grubbs, R. D., Cotton, C. F., & Daly-Engel, T. S. (2018). Squalus clarkae sp. nov., a new dogfish shark from the Northwest Atlantic and Gulf of Mexico, with comments on the Squalus mitsukurii species complex. Zootaxa, 4444. https://doi.org/10.11646/zootaxa.4444.2.1 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:D52NN. Classification follows source parent identifiers. English common names may vary by region.