Anvilicious: Lisa is extremely emphatic that religion and science cannot coexist.
Ear Worm: "Here's the angel! / See the angel! / It's my angel, no one else's! / Next to the rakes!"
Fridge Logic: The businessmen's Batman Gambit depended on Lisa (or someone else from her archeological dig) finding the skeleton in the first place. As such, you'd think they would make it a little easier for them. Everyone else but Lisa was about to quit by the time it was found. Unless they were afraid someone would find it too easily.