The Species Black List

Name: The Species Black List
Creator: The Biodiversity Group
License: https://creativecommons.org/licenses/by/4.0/

Tracking down Life Overlooked

Overview

What this is The Black List Map Localities Methods & Limits

New Species The List

Lost Species The List

Rediscoveries Get Involved

The list

Species nobody has recorded for years, and in some cases centuries

Search a name, or filter by how long a species has been missing. What lost means here, where these species were last seen, and why some are found again, are on the lost species page.

The list

Cite the underlying data as: IUCN (2026). The IUCN Red List of Threatened Species. Version 2026‑1. iucnredlist.org. doi:10.15468/0qnb58, accessed via GBIF.org. IUCN Red List Terms of Use apply.

Species accounts derive from Richardson, M. (2023) Threatened and Recently Extinct Vertebrates of the World, Cambridge University Press.

Found an error? Please tell us. This list makes checkable claims about individual species, and some of them will be wrong, a name IUCN holds under a genus we did not look for, a locality read out of the wrong clause, a taxon that should not be here at all. Corrections are the most useful thing anyone can send: info@biodiversitygroup.org, or open an issue at github.com/BiodiversityGroup/speciesblacklist. Every exclusion this project has already made is published with its reason rather than quietly dropped, and corrections are handled the same way.