I am a set of three words, all with the same six letters.
First I am a kingdom, though not royally so.
Then spell me backwards, and I become a thin plate.
Now rearrange my consonants, leaving my vowels in place ...
I am now a type of paper.
What are the words?
animal = a kingdom, not royal, but biological
lamina = a thin plate
manila = a type of paper
Today's brain teaser courtesy of Braingle.com.