If I say Amargasaurus cazaui , you say ‘long spines on cervical vertebrae’. Yes yes, it’s true that Amargasaurus had weird neck spines (and spines that, judging from their shape, really were spines rather than parts of continuous sail-like structures), but have you ever looked at its dorsals? That’s what we’re doing here: this is a posterior dorsal (from Salgado &