Complex sentence: In 1907 Douglass traveled to Uinta Basin in northeastern Utah to explore fossiliferous strata (social), he explored the hills along the Green River near Jensen and found a 6 foot thigh bone of a dinosaur.
Split into simpler sentences: In 1907 Douglass traveled to Uinta Basin in northeastern Utah to explore fossiliferous strata (social). He explored the hills along the Green River near Jensen and found a 6 foot thigh bone of a dinosaur.