5.76" (14.6 cm) tall, 3.2" (8.17 cm) wide, 3.5" thick (8.9 cm); Hypacrosaurus Dorsal Vertebrae from the Two Medicine Formation of Pondera County Montana. Here is an absolutely fantastic Hypacrosaurus dorsal vertebrae, a true premium specimen. This vertebra comes with a custom mount. Very minimal restoration. 75 million years old.