MOSCOW — Scientists have discovered well-preserved frozen woolly mammoth fragments deep in Siberia that may contain living cells, edging a tad closer to the “Jurassic Park” possibility of cloning a prehistoric animal, the mission’s organizer said Tuesday.

Russia’s North-Eastern Federal University said an international team of researchers had discovered mammoth hair, soft tissues and bone marrow some 328 feet underground during a summer expedition in the northeastern province of Yakutia.

Wooly mammoths are thought to have died out around 10,000 years ago.