NATURAL HISTORY · CATALOGUE RECORD
Spade-toothed Whale
Mesoplodon traversii (Gray, 1874)
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 spade-toothed whale (Mesoplodon traversii) is the rarest species of beaked whale. Only seven confirmed specimens have ever been found, over the timespan from 1872 to 2024. All seven were found in the South Pacific—six in New Zealand and one in Chile. Very little is known about the species.
Wikipedia contributors, Spade-toothed whale; see linked history · CC BY-SA 4.0 . Plain-text lead excerpt, at most 180 words; no infobox or later sections Retrieved 2026-10-05T07:36:22.666016+00:00. This reference remains separate from the taxonomic record.
Identity & source status
- Scientific name
- Mesoplodon traversii (Gray, 1874)
- Name authority
- (Gray, 1874)
- Common name
- Spade-toothed Whale
- Rank
- species
- Accepted status
- accepted
- Kingdom
- Animalia
- Phylum
- Chordata
- Class
- Mammalia
- Order
- Cetacea
- Family
- Hyperoodontidae
- Genus
- Mesoplodon
- 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
- orderCetacea Brisson, 1762
- suborderOdontoceti Flower, 1867
- familyHyperoodontidae Gray, 1846
- genusMesoplodon Gervais, 1850
- speciesMesoplodon traversii (Gray, 1874)
Close classified relatives
These entries share the source’s genus, Mesoplodon. They are not necessarily the closest relatives established by molecular evidence.
| Species | Classification | Source status |
|---|---|---|
| North Atlantic beaked whaleMesoplodon bidens (Sowerby, 1804) | HyperoodontidaeChordata | Accepted speciesRecorded extant |
| Hubbs' Beaked WhaleMesoplodon carlhubbsi Moore, 1963 | HyperoodontidaeChordata | Accepted speciesRecorded extant |
| Blainville's Beaked WhaleMesoplodon densirostris (Blainville, 1817) | HyperoodontidaeChordata | Accepted speciesRecorded extant |
| Ginkgo-toothed Beaked WhaleMesoplodon ginkgodens Nishiwaki & Kamiya, 1958 | HyperoodontidaeChordata | Accepted speciesRecorded extant |
| Gray's Beaked WhaleMesoplodon grayi von Haast, 1876 | HyperoodontidaeChordata | Accepted speciesRecorded extant |
| Hector's Beaked WhaleMesoplodon hectori (Gray, 1871) | HyperoodontidaeChordata | Accepted speciesRecorded extant |
| Deraniyagala's Beaked WhaleMesoplodon hotaula Deraniyagala, 1963 | HyperoodontidaeChordata | Accepted speciesRecorded extant |
| Bering Sea beaked whaleMesoplodon stejnegeri True, 1885 | HyperoodontidaeChordata | Accepted speciesRecorded extant |
| Ramari's beaked whaleMesoplodon eueu Carroll, McGowen, McCarthy, Marx, Aguilar, Dalebout, Dreyer, Gaggiotti, Hansen et al., 2021 | HyperoodontidaeChordata | Accepted speciesRecorded extant |
| Antillean beaked whaleMesoplodon europaeus (Gervais, 1855) | HyperoodontidaeChordata | Accepted speciesRecorded extant |
| Layard's beaked whaleMesoplodon layardii (Gray, 1865) | HyperoodontidaeChordata | Accepted speciesRecorded extant |
| True's Beaked WhaleMesoplodon mirus True, 1913 | HyperoodontidaeChordata | Accepted speciesRecorded extant |
Names & synonyms
Names explicitly linked to this accepted taxon in the source. Synonymy can change with revision.
| Recorded name | Source status |
|---|---|
| Mesoplodon bahamondi Reyes, Van Waerebeek, Cárdenas & Yáñez, 1996 Reyes, Van Waerebeek, Cárdenas & Yáñez, 1996 | synonym |
| Dolichodon traversii Gray, 1874 Gray, 1874 | synonym |
Documented distribution
Source distribution statements, not a complete range map. A listed locality is not necessarily a place of origin.
Indo-West Pacific
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=612598 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:4256Y. Classification follows source parent identifiers. English common names may vary by region.