Large Samoan flying fox

The large Samoan flying fox (Pteropus coxi) is a fruit-eating megabat whose type specimen was collected in Samoa in 1856 but was not identified as a new species until 2009. The only known specimen was collected by an American expedition to Samoa in 1838 to 1842, and the Smithsonian mammalogist Kristofer Helgen rediscovered it preserved in alcohol. It was the largest known bat from Polynesia. Because the type specimen is dead and no other examples of the species are known, it is believed to be extinct, and the Wikipedia list of pteropodids gives its IUCN status as extinct.