Russian scientist's have taken fruit buried for 32 000 years by a squirrel and used parts of the fruit to grow a living plant from the material. The fruit was found buried 20-40 meters down in a riverbank where the scientists believe it was frozen soon after the squirrel buried it and has never thawed as apparent from vertical ice crystals at the site.
The plant is of a specie Silene Stenophylla which still grows in Russia's Siberian tundra though the plant has subtle differences in the shape of the petals and sex of the flowers to the modern plant. It has been grown using placental tissue from the fruit and not a mature seed.
Till this point the oldest plant material to produce a modern plant was found in Israel at Masada but that date palm seed was only 2 000 years old.
