<snip> The other print likely was left by a smaller ankylosaur, a four-legged, thickly armored plant eater, the museum said <snip> Hello List, excuse my ignorance, I thought Ankylosaurs were more or less cretaceous. How can an ankylosaur print date from 170 mya (is that middle Jurassic Bathonian/Bajocian)? Cheers, Jean-Michel