he's really our best preparator. >> pete let me work on part of the skull in the field, which was amazing. >> he's working and uncovering the teeth one by one by one. >> it was spectacular. teeth like this just sticking right out of the skull. >> we're going, oh my god. look at this thing. look how huge it is. this has gotta be bigger than the one at the american museum. it's huge. it's wonderful. ♪ ♪ we had started a long time ago naming particular dinosaurs, and the name sue, for susan hendrickson, goes down in history, and i think that's a kind of a cool way to reward those amateurs who make these discoveries.