The Species Black List
Atractus nasutus
Vereda La Lana ground snake
The Vereda La Lana ground snake (Atractus nasutus) is known only from a single specimen collected in 1954 in northwestern Colombia (Antioquia department).
Status Data Deficient on the IUCN Red List Restriction tier 5, type locality or a single collection Class Reptilia Realm Neotropical Locality not specified in the source As IUCN records it Atractus nasutus Passos, Fernandes & Lynch, 2009 This species is one of 3,062 in a list of vertebrates the IUCN Red List records as Data Deficient or has never assessed, ranked by how narrowly restricted the published record says they are. The sentence above is the evidence the tier was read from, quoted from Matthew Richardson, Threatened and Recently Extinct Vertebrates of the World (2023).
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Check this species elsewhere: IUCN Red List · GBIF