The Kansas preteen has spent at least 30 hours cleaning the fossil, which he plans to show at the Sedgwick County Fair in July

The Kansas preteen has spent at least 30 hours cleaning the fossil, which he plans to show at the Sedgwick County Fair in July

Stay up to date with notifications from The IndependentNotifications can be managed in browser preferences.AllNewsSportCultureLifestyleA 12-year-old Kansas boy, Corbin Bullard,…