 The Jijaki modified the genetic code of a sample of "Nanotyrannus" to bring back the five ancestral digits buried in their junk DNA.With more capable forelimbs and enough time, "Nanotyrannus" eventually evolved into the Quintaglios.Meanwhile, on the Jijaki homeworld, nuclear war broke out, wiping out all Jijaki except for those on the Space Arks.