 In June 2000, PRI staff along with volunteers from several organizations and universities began draining the site and discovered more mastodon bones.The excavation took approximately 6 weeks and more than 95% of the bones were discovered, including both tusks, the skull, and the major limb bones, making the Hyde Park mastodon one of the most complete and well-preserved skeletons of its kind ever discovered.The specimen was most likely an older male weighing as much as .