This is the weak link in the Judy Moody canon. Still far better than lameass Junie B. Jones will ever be, but weak nonetheless. It just felt like the author was too worried about cramming in as many Latin names for bones as possible and not concerned enough with fun Judy Moody shenanigans. It certainly didn't make me laugh out loud the way that Judy Moody Gets Famous! did--I read that one while Lauren and I were standing in line for a movie (she was reading, too). I think that the other movie-goers thought that we were weird.
But, hey. Weak Judy Moody is better than no Judy Moody at all.