Since the disappearance and effective extinction of the thylacine, speculation, and searches for a living specimen has become a topic of interest to some members of the cryptozoology subculture. The search for the animal has been the subject of books and articles, with many reported sightings that are largely regarded as dubious. According to writer Errol Fuller, the most likely record of the species persistence was proposed by Athol Douglas in the journal "Cryptozoology", where Douglas challenges the carbon dating of the specimen found at Mundrabilla in South Australia as 4,500 years old; Douglas proposed instead that the well-preserved thylacine carcass was several months old when discovered. The dating of the specimen has not been reassessed.