But there's aready a Mammoth Park

Long-extinct woolly mammoth will be brought back — within just 4 years, entrepreneur claims

Also "the Tasmanian tiger, which went extinct in the early 1980s, would take “just weeks” to revive, and the dodo bird, last seen in the 1600s, would require about one month, according to the bio boss.

Mammoth Park is here (not an actual mammoth in sight), and Jurassic is already taken, so this will not be as easy as it sounds.