 Fernandina

The "C. phantastica" species from Fernandina was originally known from a single specimen — an old male from the voyage of 1905–06.No other tortoises or remains were found on the island for a long time after its sighting, leading to suggestions that the specimen was an artificial introduction from elsewhere.Fernandina has neither human settlements nor feral mammals, so if this species ever did exist, its extinction would have been by natural means, such as volcanic activity.