The Tale of the Golden Toad, by Madeline Von Foerster. 

Roq La Rue Art Gallery, Seattle WA:  

“Although imagining the future, a common theme of the paintings is memory. While researching these works, the artist hunted for a fairytale titled “The Golden Toad,” which she was certain she had read. However, memory was deceiving her, for the Golden Toad (Bufo periglenes) is actually a Costa Rican amphibian, recently extinct. Ironically, though humans are responsible for the planet’s vanishing forests and extirpated species, it is in human imagination and memory that these lost treasures will continue to exist. Therefore, the Golden Toad, now gone, returns in mythical form, to remind us what we can still save.

Extinct since 2004.