Glaucostegus obtusus (Müller & Henle, 1841)
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 widenose guitarfish (Glaucostegus obtusus) is a species of ray in the Glaucostegidae family. They are a part of the subclass Elasmobranchii, along with other cartilaginous fish such as sharks, rays and skates. Their name comes from their distinctively broader and blunter snout, followed by a long, slender, and tapering body which resembles a guitar. Despite their close relation to sharks and stingrays, they pose no threat to humans. After an assessment in December 2018, the IUCN has classified the Widenose Guitarfish as critically endangered.
Wikipedia contributors, Widenose guitarfish; see linked history · CC BY-SA 4.0 . Plain-text lead excerpt, at most 180 words; no infobox or later sections Retrieved 2026-10-05T22:36:57.064110+00:00. This reference remains separate from the taxonomic record.
Identity & source status
- Scientific name
- Glaucostegus obtusus (Müller & Henle, 1841)
- Name authority
- (Müller & Henle, 1841)
- Rank
- species
- Accepted status
- accepted
- Kingdom
- Animalia
- Phylum
- Chordata
- Class
- Elasmobranchii
- Order
- Rhinopristiformes
- Family
- Glaucostegidae
- Genus
- Glaucostegus
- Extinction status
- Not supplied by this source
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.
- domainEukaryota (Chatton, 1925) Whittaker & Margulis, 1978
- kingdomAnimalia
- phylumChordata
- subphylumVertebrata
- infraphylumGnathostomata
- parvphylumChondrichthyes
- classElasmobranchii
- subclassNeoselachii
- infraclassBatoidea
- orderRhinopristiformes
- familyGlaucostegidae Last, Séret & Naylor, 2016
- genusGlaucostegus Bonaparte, 1846
- speciesGlaucostegus obtusus (Müller & Henle, 1841)
Close classified relatives
These entries share the source’s genus, Glaucostegus. They are not necessarily the closest relatives established by molecular evidence.
| Species | Classification | Source status |
|---|---|---|
| Granulated guitarfishGlaucostegus granulatus (Cuvier, 1829) | GlaucostegidaeChordata | Accepted speciesExtinction status not supplied |
| Glaucostegus halavi (Forsskål, 1775) | GlaucostegidaeChordata | Accepted speciesExtinction status not supplied |
| Glaucostegus younholeei Habib & Islam, 2001 | GlaucostegidaeChordata | Accepted speciesExtinction status not supplied |
| Glaucostegus cemiculus (Geoffroy Saint-Hilaire, 1817) | GlaucostegidaeChordata | Accepted speciesExtinction status not supplied |
| Glaucostegus microphthalmus (Teng, 1959) | GlaucostegidaeChordata | Accepted speciesExtinction status not supplied |
| Glaucostegus thouin (Anonymous [Lacepède], 1798) | GlaucostegidaeChordata | Accepted speciesExtinction status not supplied |
| Glaucostegus typus (Anonymous [Bennett], 1830) | GlaucostegidaeChordata | Accepted speciesExtinction status not supplied |
Names & synonyms
Names explicitly linked to this accepted taxon in the source. Synonymy can change with revision.
| Recorded name | Source status |
|---|---|
| Rhinobatus obtusus Müller & Henle, 1841 Müller & Henle, 1841 | synonym |
| Rhinobatos obtusus Müller & Henle, 1841 Müller & Henle, 1841 | synonym |
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.marinespecies.org/aphia.php?p=taxdetails&id=1022265 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:3G6MW. Classification follows source parent identifiers. English common names may vary by region.