1) Find fossils of those animals and then find DNA.
2) Incubate and multiply the DNA with a host animal nucleus (ex: woolly mammoth and elephant).
3) Cells would start to form and multiply.
4) It will hopefully develop into an animal.
The top animals on the list are:
Woolly Mammoth (Extinct around 10,000 BC)
Gastric Brooding Frog (Extinct in the 1980's)
Passenger Pigeon (Extinct in 1914)
Thylacine or Tasmanian Tiger (Extinct in 1930's)
Pyrenean Ibex (Extinct in 2000)
Saber-Toothed Cat (Extinct around 10,000 BC)
Dodo Bird (Extinct around late 1700's)
Ground Sloth (Extinct around 10,000 BC)
Irish Elk (Extinct around 10,000 BC)