FASA 365 Day 109, Humpback Wader, 20-25 ft. LARGE Patch of calcified …. “stuff” on its back.
Found in grassy marshes. Fierce looking, but definitely an herbivore. ALL the horns and pointy stuff are for digging.
However, don’t this guy knows how to USE what he’s got to defend itself. Including letting itself be bitten on the back. Which explains the bits of broken teeth often visible that were left behind.