Blomberg’s Galapagos Snail (Naesiotus blombergi)
Blomberg’s Galapagos Snail was described in 1950 (or 1951 according to other sources) based on 12 specimens that were collected 200 to 300 m above sea level on plants, bushes and trees on the Isla Santa Cruz in the Galápagos archipelago. [1]
The species was apparently last seen alive in 1974; it was not found during the most recent field surveys and is feared to be extinct.
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References:
[1] Steven M. Chambers; David W. Steadman: Holocene terrestrial gastropod faunas from Isla Santa Cruz and Isla Floreana, Galápagos: evidence for late Holocene declines. Transactions of the San Diego Society of Natural History 21(6): 89-110. 1986
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edited: 01.06.2021