Scansiopteryx had a long middle finger but probably didn't use it for feeding
4 Which reptile is nearly only known from its terrible hands?
Deinocheirus mirificus
4 Correct

I was thinking of Stagonolepis, but I agree that other aetosaurs may have resembled an armadillo. I got some of my questions from 10 of the Weirdest Prehistoric Creatures, but I should have cross-referenced some of them. Thanks for your patience. I'm sorry for the confusion I've caused.So were you thinking Typothorax for 3? To be honest, reading a little of the literature, I think any Aetosaur would be an acceptable answer.
3. Clue: It was an aetosaurian, which lived in the Late Triassic.
5. The answer was Scansoriopteryx, although I found the information for Epidendrosaurus, which is probably a synonym. Scansiopteryx is so similar, I'll let you have that.