Hypacrosaurus (Hadrosaur) Metatarsal w/ Custom StandHypacrosaurus is an extinct genus of duck billed dinosaur from Late Cretaceous North America. Growing to lengths of nearly 30ft, its tall neural spines gave it a large profile earning it the name "near highest lizard". Like other Hadrosaurs, Hypacrosaurus was a bipedal quadrupedal herbivore. It likely roamed in large herds, grazing on a variety of plants.