Svalbard’s a ‘seed vault’ only, there must be something for extinct animal species. Another question I thought of: if stored on the moon, who among the finders will know enough to even know that they’re looking at? let alone to make purposeful use of it?
For very long-time, high-probability safety, the surface of the Earth is constantly being re-shaped. Whole mountains can disappear in a few million years. Floods, earthquakes, ice, weather alone.