The Species Black List
Pattonomys occasius
bare-tailed armoured tree rat
The bare-tailed armoured tree rat (Pattonomys occasius) is known only from a few specimens collected from the western Amazon in eastern Ecuador and northern Peru.
Status Data Deficient on the IUCN Red List Restriction tier 2, restricted, extent unclear Class Mammalia Realm Neotropical Locality not specified in the source As IUCN records it Pattonomys occasius (Thomas, 1921) 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