Giant Island Deermouse (Peromyscus nesodytes)

The Giant Island Deermouse was described in 1936 based on subfossil remains, the species was restricted to San Miguel – and Santa Rosa Islands, two of the Channel Islands offshore southwestern California, USA.

The species is believed to have disappeared sometimes between 2000 years ago and 1860, probably due to the accidental introduction of the North American Deermouse (Peromyscus maniculatus (Wagner)) by the Chumash, the native people of that region. 

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edited: 23.01.2020