Well, the **_oldest intact DNA_** found is actually **419 million** years old, and it belongs to (not surprisingly) bacteria. Samples were extracted from surface-sterilized salt of different geological ages (23, 121, 419 million years of age, MYA).
But as you mentioned, these are fragments. Studies on the half-life of DNA suggest that even under ideal circumstances, DNA sequences older than 1.5 million years will be too short to be readable.
The **oldest genome** known to date, though, is **700,000** years old, and was recovered from samples from a horse leg bone. You were correct, the leg was in **permafrost**. That's a considerable jump from mastodon and polar bear fossils which were about 50,000 and 110,000 years old.