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Scientific Name: Borophagus secundus Location: Hemphill County
one of the rarest of Cretaceous dinosaurs
during the Middle Eocene Epoch
All That Remains chronicles the intriguing findings of Bob Pyle who has spent three decades exploring ancient sites in the mountain state and around the world
110-90 million years ago
Acheroraptor temertyorum Compsognathus Scientific Name: Borophagus secundus Location:Acheroraptor temertyorum Skull & Jaw Elements Acheroraptor is an extinct genus of dromaeosaurid theropod dinosaur known from the Hell Creek Formation of Montana. It contains a single species, Acheroraptor temertyorum. It is one of the two geologically youngest known species of dromaeosaurids, the other being Dakotaraptor, which is also known from Hell Creek. Acheroraptor was first described and named by David Evans, Derek Larson and Philip Currie in
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