Herbivorous, Bipedal Dinosaur With Thumb Spikes
Puzzle 4 of Dungeon Delving Pack
Question is: Herbivorous, Bipedal Dinosaur With Thumb Spikes
and the answer is: IGUANODON
Word Meaning:
IGUANODON — Any large dinosaur of the genus †Iguanodon, of the Jurassic and Cretaceous periods.
Definition source: Wiktionary (CC BY-SA 4.0)