This is another one I overthought starting with Australopithecus. For the most part, I didn’t think it would work for two reasons. The first reason is I figured it was just common enough that Paul should know it. The second reason is it’s 16 letters long (more than the 15 squares on a scrabble board.)

I ended up going with Paranthropus because it was shorter and more obscure.

Now, nobody ask me what the odds of Nancy getting it along with her seven letters are.