"A Pachy... a pachy... oh, hell. Uh, the fathead with the bald spot. Friar Tuck!" —Roland Tembo(src) Pachycephalosaurus is the last, largest, and most famous member of the pachycephalosaurs, or thick-headed “bone headed” dinosaurs. In the 1970s, paleontologist Peter Galton proposed that male pachycephalosaurs used their dome heads as battering rams, like bighorn sheep. The idea caught the public's imagination, and two individuals are seen doing this in The Lost World: Jurassic Park (of course, t