When the news broke last week that a T-Rex dinosaur fossil named Stan had been sold by Neal Larson of Hill City for $31.8 million, many local people were thinking “I know that guy.” Neal and his brother Pete have had a long association with amateur paleontologists and landowners in the Timber Lake-Isabel area, which is rich in both ammonites and dinosaurs, including Triceratops and T-Rex. In 2002…