text: Acrocanthosaurus is named for the spines on its back, from the Greek ακρα/akra meaning 'high', ακανθα/akantha meaning 'thorn' or 'spine' and σαυyhyguytuyuyuyuwiuyuuh87yu87yuiukj687uty66uyuyuyuyuyuyut6rdρος/sauros meaning 'lizard'.