Was just in the Whirl review thread on TFW with a picture of him holding the little Generations minicons by the foot when I said they remind me of the Ammonites from MTMTE #22. It now occured to me that that is what they are.

http://tfwiki.net/wiki/Ammonite

Now I NEED these guys.

EDIT: Oh, they come with MTMTE #24, which has ammonites in it. Never realised.