Evidence found
10 records across 2 countries and territories, 1993–1993.
Squalus bucephalus · GBIF taxon key 5216391
Where has the bighead spurdog been recorded?
Squalus bucephalus occurrence evidence comes from 10 records in 2 countries and territories, from 1993 to 1993. Most records come from Norfolk Island.
- 10 records
- 2 places
- 1 years recorded
- Elasmobranchii class
Observation evidence passport
Source coverage
CC0 GBIF Animalia occurrence facets, including country, month and year summaries.
Refreshed 2026-09-24. Inspect the taxon on GBIF.
What this means
The species has been recorded in the listed places in the stated source universe. Peak month: November.
1 month reach at least 10% of the peak facet count.
What this does not mean
historical describes the record pattern, not a formal range, residency, abundance or conservation assessment.
A single record remains evidence of a recording, not proof that a population lives there.
Compare this animal’s observation pattern
When it is recorded
JFMAMJJASOND
Peak month: November. Records cluster in the months an animal is present and being looked for, so a summer peak can reflect observer effort as much as the animal.
Where bighead spurdog has been recorded
The countries below show where occurrence evidence exists for bighead spurdog. They do not define a complete habitat range: survey effort differs by place, and historical or one-off records can appear alongside repeated presence.
| Place | Records | Share |
|---|---|---|
| Norfolk Island | 8 | |
| New Caledonia | 2 |
Record pattern: historical
Historical records with no recent record in the covered source. This is inferred from how many years and months the animal appears in, not from a range map — treat it as evidence, not a formal assessment.
Historical records with no recent record in the covered source. This is inferred from how many years and months the animal appears in, not from a range map — treat it as evidence, not a formal assessment.