This fossil replica, which measures 7 inches x 4 inches x 3 inches, was cast from a fossilized reconstruction. Hoplophoneus primeavus is an extinct genus of mammal lived during the late Oligocene (33 - 30.5 million years ago), some 20 million years before Smilodon. Some earlier authors erroneously place Hoplophoneus among the Felidae (true cats) as the ancestor of Smilodon and true Sabertoothed cat, but current fossil evidence indicates that Hoplophoneus and Smilodon are from different evolutionary lines. Some were the size of bobcats while others were jaguar-sized. Like many other Nimravids, Hoplophoneous had a bony flange into which its curved canines fit. This fossil replica is cast in museum grade casting compound and has hand-finished details. This replica does not include a display stand.