Simplify the following text for a Grade 7 native English-speaking person.
Original: Fossils have been recovered from the U.S. states of Montana , Wyoming , and Oklahoma , in rocks of the Cloverly Formation and Antlers Formation , though teeth that may belong to Deinonychus have been found much farther east in Maryland .
Simplified: Fossils have been recovered from the U.S. states of Montana , Wyoming , and Oklahoma .