lol. Who'd EVER think of dinos turning into birds?
Anyhow, I don't even think Sligs, Glukkons, Interns, or Vykkers ever even existed in the prehistoric times. Unless their ancient ways of lifes were never recorded, which I guess WOULD mean that they were around in prehistoric times. But, I was more along the lines of back then when Sligs were slugs, Muds were birds, and Gluks were simple octopuses.