The term "Oklahoma dinosaur" often refers to fossils discovered in the state of Oklahoma, particularly those from the Late Cretaceous period. Notable finds include the remains of large dinosaurs like Saurophaganax and Tenontosaurus, which provide insight into the prehistoric ecosystems that once existed in the region. These fossils have been crucial for paleontologists studying the diversity of dinosaur species in North America. The discoveries in Oklahoma contribute to our understanding of how these creatures lived, interacted, and evolved during their time on Earth.